Best OpenAI Realtime API Alternatives in 2025
Find the top alternatives to OpenAI Realtime API currently available. Compare ratings, reviews, pricing, and features of OpenAI Realtime API alternatives in 2025. Slashdot lists the best OpenAI Realtime API alternatives on the market that offer competing products that are similar to OpenAI Realtime API. Sort through OpenAI Realtime API alternatives below to make the best choice for your needs
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An API powered by Google's AI technology allows you to accurately convert speech into text. You can accurately caption your content, provide a better user experience with products using voice commands, and gain insight from customer interactions to improve your service. Google's deep learning neural network algorithms are the most advanced in automatic speech recognition (ASR). Speech-to-Text allows for experimentation, creation, management, and customization of custom resources. You can deploy speech recognition wherever you need it, whether it's in the cloud using the API or on-premises using Speech-to-Text O-Prem. You can customize speech recognition to translate domain-specific terms or rare words. Automated conversion of spoken numbers into addresses, years and currencies. Our user interface makes it easy to experiment with your speech audio.
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LumenVox
LumenVox
55 RatingsAI-driven speech recognition technology and voice authentication technology can transform customer engagement. Our 20-year history has been dedicated to ensuring that our partners are successful through collaboration. Our curiosity keeps us innovating for 20 more years. Our flexible speech-enabling technology allows you to create a solution that meets all your customers' needs, reliably and affordably. We do one thing well. Speech-enabling your applications is our specialty. Deliver great voice automation and interactions. LumenVox ASR/TTS can be used for simple commands or more complex questions. This will help you increase efficiency on both ends of the phone line. You won't ever repeat yourself. You will have the most flexibility in terms of capabilities, deployment, and monetization. LumenVox can help you create it if you can think of it. Our intuitive technology and toolsets make it easier to reduce time from development to deployment. -
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Speechmatics
Speechmatics
$0 per monthBest-in-Market Speech-to-Text & Voice AI for Enterprises. Speechmatics delivers industry-leading Speech-to-Text and Voice AI for enterprises needing unrivaled accuracy, security, and flexibility. Our enterprise-grade APIs provide real-time and batch transcription with exceptional precision—across the widest range of languages, dialects, and accents. Powered by Foundational Speech Technology, Speechmatics supports mission-critical voice applications in media, contact centers, finance, healthcare, and more. With on-prem, cloud, and hybrid deployment, businesses maintain full control over data security while unlocking voice insights. Trusted by global leaders, Speechmatics is the top choice for best-in-class transcription and voice intelligence. 🔹 Unmatched Accuracy – Superior transcription across languages & accents 🔹 Flexible Deployment – Cloud, on-prem, and hybrid 🔹 Enterprise-Grade Security – Full data control 🔹 Real-Time & Batch Processing – Scalable transcription 🚀 Power your Speech-to-Text and Voice AI with Speechmatics today! -
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Amazon Polly
Amazon
Amazon Polly is a service designed to convert written text into realistic speech, enabling the development of applications that can communicate vocally and fostering the creation of innovative speech-enabled products. Utilizing state-of-the-art deep learning technologies, Polly's Text-to-Speech (TTS) service produces natural-sounding human voices. With a variety of lifelike voices available in numerous languages, developers can create speech-enabled applications that are functional in diverse global markets. Beyond the Standard TTS voices, Amazon Polly also provides Neural Text-to-Speech (NTTS) voices, which enhance speech quality significantly through a novel machine learning technique. In addition, Polly's Neural TTS supports two distinct speaking styles: a Newscaster style designed for news narration and a Conversational style that is perfect for interactive communication scenarios such as telephony. This flexibility allows developers to tailor the auditory experience to fit their specific application needs. -
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Amazon Lex
Amazon
Amazon Lex is a service designed for creating conversational interfaces in various applications through both voice and text input. It incorporates advanced deep learning technologies, such as automatic speech recognition (ASR) for transforming spoken words into text, along with natural language understanding (NLU) that discerns the intended meaning behind the text, facilitating the development of applications that offer immersive user experiences and realistic conversational exchanges. By utilizing the same deep learning capabilities that power Amazon Alexa, Amazon Lex empowers developers to efficiently craft complex, natural language-based chatbots. With its capabilities, you can design bots that enhance productivity in contact centers, streamline straightforward tasks, and promote operational efficiency throughout the organization. Furthermore, as a fully managed service, Amazon Lex automatically scales to meet demand, freeing you from the complexities of infrastructure management and allowing you to focus on innovation. This seamless integration of capabilities makes Amazon Lex an attractive option for developers looking to enhance user interaction. -
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Google has unveiled enhanced Gemini audio models that greatly broaden the platform's functionalities for engaging and nuanced voice interactions, as well as real-time conversational AI, highlighted by the arrival of Gemini 2.5 Flash Native Audio and advancements in text-to-speech technology. The revamped native audio model supports live voice agents capable of managing intricate workflows, reliably adhering to detailed user directives, and facilitating smoother multi-turn dialogues by improving context retention from earlier exchanges. This upgrade is now accessible through Google AI Studio, Vertex AI, Gemini Live, and Search Live, allowing developers and products to create dynamic voice experiences such as smart assistants and corporate voice agents. Additionally, Google has refined the core Text-to-Speech (TTS) models within the Gemini 2.5 lineup to enhance expressiveness, tone modulation, pacing adjustments, and multilingual capabilities, resulting in synthesized speech that sounds increasingly natural. Furthermore, these innovations position Google's audio technology as a leader in the realm of conversational AI, driving forward the potential for more intuitive human-computer interactions.
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Dialogflow
Google
4 RatingsDialogflow by Google Cloud is a natural-language understanding platform that allows you to create and integrate a conversational interface into your mobile, web, or device. It also makes it easy for you to integrate a bot, interactive voice response system, or other type of user interface into your app, web, or mobile application. Dialogflow allows you to create new ways for customers to interact with your product. Dialogflow can analyze input from customers in multiple formats, including text and audio (such as voice or phone calls). Dialogflow can also respond to customers via text or synthetic speech. Dialogflow CX, ES offer virtual agent services for chatbots or contact centers. Agent Assist can be used to assist human agents in contact centers that have them. Agent Assist offers real-time suggestions to human agents, even while they are talking with customers. -
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Amazon Nova 2 Sonic
Amazon
Nova 2 Sonic is an innovative speech-to-speech model from Amazon that facilitates real-time voice interactions, seamlessly merging speech recognition, generation, and text processing into one cohesive system. This integration allows for natural and fluid conversations, effortlessly transitioning between spoken and written communication. With enhanced multilingual capabilities and a variety of expressive voice options, Nova 2 Sonic creates responses that are not only more lifelike but also display a deeper understanding of context. Its extensive one-million-token context window enables prolonged interactions while maintaining coherence with previous exchanges. Additionally, the model's ability to handle asynchronous tasks allows users to engage in conversation, switch topics, or pose follow-up inquiries without interrupting ongoing background processes, thereby creating a more dynamic and engaging voice interaction experience. Such advancements ensure that conversations feel less constrained by conventional turn-taking dialogue methods, paving the way for more immersive communication. -
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Grok Voice Agent
xAI
$0.05 per minuteThe Grok Voice Agent API allows developers to create advanced voice agents with industry-leading speed and intelligence. Built entirely in-house by xAI, the voice stack includes custom models for audio detection, tokenization, and speech generation. This deep control enables rapid performance improvements and ultra-low latency responses. Grok Voice Agents support dozens of languages with native-level fluency and can switch languages mid-conversation. The API consistently outperforms competing voice models in human evaluations for pronunciation and prosody. Real-time tool calling and live search across X and the web are supported. Developers can integrate custom tools to enable dynamic task execution. The API follows the OpenAI Realtime specification for easy adoption. Pricing is a flat per-minute rate, making costs predictable at scale. The Grok Voice Agent API is designed for production-ready voice applications. -
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smallest.ai
smallest.ai
$5 per monthSmallest.ai is an innovative AI platform that specializes in delivering highly personalized voice experiences in real-time, characterized by low latency and impressive scalability. Its premier offerings, Waves and Atoms, empower users to create lifelike AI voices and implement real-time AI agents for engaging customer interactions. With ultra-realistic text-to-speech functionalities, Waves supports a diverse range of over 30 languages and 100 accents, achieving an API latency of less than 100 milliseconds for immediate voice generation. Additionally, it includes a voice cloning feature that allows users to mimic any voice using just a brief 5-second audio clip, making it perfect for tailored branding and content production. Atoms is designed to provide AI agents that manage customer calls, facilitating smooth and natural conversations without the need for human assistance. Both offerings are crafted for straightforward integration, featuring scalable APIs and Python SDKs that ease their deployment across various platforms, ensuring a versatile solution for businesses looking to enhance their customer engagement. This adaptability makes Smallest.ai a valuable asset for companies aiming to incorporate advanced voice technology into their operations. -
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Azure AI Speech
Microsoft
Easily and efficiently develop voice-enabled applications with the Speech SDK, which allows for precise speech-to-text transcription, the generation of realistic text-to-speech voices, and the translation of spoken audio while also incorporating speaker recognition features. By utilizing Speech Studio, you can design customized models that suit your specific application needs, benefiting from advanced speech recognition, lifelike voice synthesis, and award-winning capabilities in speaker identification. Your data remains private, as your speech input is not recorded during processing, and you can create unique voices, expand your base vocabulary with specific terms, or develop entirely new models. The Speech SDK can be deployed in various environments, whether in the cloud or through edge computing in containers, enabling rapid and accurate audio transcription across more than 92 languages and their respective variants. Furthermore, it provides valuable customer insights through call center transcriptions, enhances user experiences with voice-driven assistants, and captures critical conversations during meetings. With options for text-to-speech, you can build applications and services that engage users conversationally, selecting from an extensive array of over 215 voices in 60 different languages, making your projects more dynamic and interactive. This flexibility not only enriches the user experience but also broadens the scope of what can be achieved with voice technology today. -
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Gemini 2.5 Flash TTS
Google
The Gemini 2.5 Flash TTS model represents the latest advancement in Google’s Gemini 2.5 series, focusing on rapid, low-latency speech synthesis that produces expressive and controllable audio output. This model introduces notable improvements in tonal variety and expressiveness, enabling developers to create speech that aligns more closely with style prompts, whether for storytelling, character portrayals, or other contexts, thus achieving a more authentic emotional depth. With its precision pacing feature, it can adjust the speed of speech based on the context, allowing for quicker delivery in certain sections while also slowing down for emphasis when required, following specific instructions. Additionally, it accommodates multi-speaker dialogues with consistent character voices, making it suitable for various scenarios such as podcasts, interviews, and conversational agents, while also enhancing multilingual capabilities to maintain each speaker's distinct tone and style across different languages. Optimized for reduced latency, Gemini 2.5 Flash TTS is particularly well-suited for interactive applications and real-time voice interfaces, ensuring a seamless user experience. This innovative model is set to redefine how developers implement voice technology in their projects. -
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Veritone Voice
Veritone
Achieve truly lifelike AI voice production at unparalleled speed and scale. Generate content on demand with options for both text-to-speech and speech-to-speech inputs. Engage with new audiences in various localized languages using customized branded voices. Create voice-over materials without the hassle of coordinating schedules or incurring studio expenses. Replicate voices, including those of celebrities, sports commentators, and public figures, provided you have their permission. Leverage text-to-speech and speech-to-speech input to craft localized content as needed. Utilize Veritone’s established AI proficiency to enhance your voice automation processes and achieve widespread success. From refining metadata to creating dialogue, we employ top-tier AI technologies to ensure optimal outcomes from start to finish. Expand the capabilities of realistic, real-time AI voice across all your projects and products. With our cutting-edge AI voice API, you can streamline your processes and save precious time by integrating Veritone Voice directly into any application, enabling automation at scale while driving innovation in your voice solutions. Embrace the future of voice technology and transform the way you communicate. -
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Amazon Nova Sonic
Amazon
Amazon Nova Sonic is an advanced speech-to-speech model that offers real-time, lifelike voice interactions while maintaining exceptional price efficiency. By integrating speech comprehension and generation into one cohesive model, it allows developers to craft engaging and fluid conversational AI solutions with minimal delay. This system fine-tunes its replies by analyzing the prosody of the input speech, including elements like rhythm and tone, which leads to more authentic conversations. Additionally, Nova Sonic features function calling and agentic workflows that facilitate interactions with external services and APIs, utilizing knowledge grounding with enterprise data through Retrieval-Augmented Generation (RAG). Its powerful speech understanding capabilities encompass both American and British English across a variety of speaking styles and acoustic environments, with plans to incorporate more languages in the near future. Notably, Nova Sonic manages interruptions from users seamlessly while preserving the context of the conversation, demonstrating its resilience against background noise interference and enhancing the overall user experience. This technology represents a significant leap forward in conversational AI, ensuring that interactions are not only efficient but also genuinely engaging. -
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Deepgram
Deepgram
$0You can use accurate speech recognition at scale and continuously improve model performance by labeling data, training and labeling from one console. We provide state-of the-art speech recognition and understanding at large scale. We do this by offering cutting-edge model training, data-labeling, and flexible deployment options. Our platform recognizes multiple languages and accents. It dynamically adapts to your business' needs with each training session. Enterprise-specific speech transcription software that is fast, accurate, reliable, and scalable. ASR has been reinvented with 100% deep learning, which allows companies to improve their accuracy. Stop waiting for big tech companies to improve their software. Instead, force your developers to manually increase accuracy by using keywords in every API call. You can train your speech model now and reap the benefits in weeks, instead of months or even years. -
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Fish Audio
Hanabi AI
Free 1 RatingFish Audio delivers cutting-edge AI-driven technologies for text-to-speech (TTS), voice replication, and speech recognition (STT). This platform caters to businesses and developers aiming to incorporate lifelike voice generation into their software applications. With its advanced voice cloning capabilities, users can easily mimic specific voices, while the generative AI can generate expressive and natural speech across various languages. Moreover, Fish Audio features an API that facilitates seamless integration, along with enhanced functionalities like voice activity detection. This versatility makes Fish Audio an invaluable resource for diverse sectors, including content production, virtual assistant development, and customer service enhancements, ensuring that users can engage their audiences effectively. It stands out as a comprehensive solution for anyone seeking to elevate their audio-related projects with sophisticated technology. -
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ElevenLabs
ElevenLabs
$1 per month 4 RatingsThe most versatile and realistic AI speech software ever. Eleven delivers the most convincing, rich and authentic voices to creators and publishers looking for the ultimate tools for storytelling. The most versatile and versatile AI speech tool available allows you to produce high-quality spoken audio in any style and voice. Our deep learning model can detect human intonation and inflections and adjust delivery based upon context. Our AI model is designed to understand the logic and emotions behind words. Instead of generating sentences one-by-1, the AI model is always aware of how each utterance links to preceding or succeeding text. This zoomed-out perspective allows it a more convincing and purposeful way to intone longer fragments. Finally, you can do it with any voice you like. -
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NeuralSpace
NeuralSpace
Utilize NeuralSpace's enterprise-level APIs to harness the extensive capabilities of speech and text AI across more than 100 languages. By employing Intelligent Document Processing, you can cut down the time spent on manual operations by as much as 50%. This technology enables you to extract, comprehend, and categorize information from any type of document, regardless of its quality, format, or layout. As a result, your team will be liberated from tedious tasks, allowing them to concentrate on more impactful activities. Enhance the global accessibility of your products with cutting-edge speech and text AI solutions. On the NeuralSpace platform, you can train and deploy high-performing large language models with ease. Our intuitive, low-code APIs facilitate seamless integration into your existing systems, ensuring that you can implement your ideas effortlessly. With our resources at your disposal, you are empowered to transform your vision into reality while streamlining workflows and improving efficiency. -
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Babelbeez
Babelbeez
$39/month Babelbeez is a browser-native, real-time voice agent that replaces the legacy Public Switched Telephone Network (PSTN) with WebRTC and Generative AI. We built Babelbeez for the Independent Builder who wants to automate support without the friction of SIP trunks, carrier fees, or robotic IVR trees. Instead of a "Click-to-Call" button that exposes your phone number to spam, Babelbeez embeds directly on your site as a secure, encrypted voice interface. The Architecture: Native Speech-to-Speech: We bypass the traditional "Transcoding Chain" (Speech → Text → LLM → Text → Speech) that plagues most voice bots. By utilizing OpenAI’s gpt-realtime architecture, our agents process audio directly. This enables sub-second latency and human-level "semantic interruption" (the bot stops talking the moment you interrupt it). RAG-Powered Knowledge: No manual intent training. The agent ingests your website and PDF documentation to build a dynamic knowledge base via Retrieval Augmented Generation. It learns your specific technical documentation and business rules automatically. Zero-Config Polyglot: Language detection is performed aurally. The agent switches languages instantly based on the user's audio input, with no rigid "Press 1 for English" flow required. Unlimited Concurrency: Legacy infrastructure charges you per "channel" or "slot." We don't. Our architecture scales elastically, handling 1 or 1,000 simultaneous sessions without busy signals or capacity planning. The Philosophy: We believe the phone number is a legacy identifier that deserves to die. Babelbeez is 100% browser-based. No phone numbers. No carrier fees. No spam. Just pure, encrypted voice data between your customer and your agent. License/Pricing: Free Trial available. -
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Orate
Orate
Orate is a comprehensive AI toolkit designed for speech that empowers developers to generate lifelike, human-like audio and transcribe spoken language through a cohesive API that works with major AI platforms including OpenAI, ElevenLabs, and AssemblyAI. This platform features text-to-speech capabilities, allowing users to effortlessly convert written text into realistic audio by utilizing a user-friendly API that integrates with multiple service providers. For example, developers can easily generate speech from text prompts by importing the 'speak' function from Orate alongside their selected provider. Furthermore, Orate excels in speech-to-text processing, converting spoken words into accurate and meaningful text with exceptional speed and dependability. By utilizing the 'transcribe' function in conjunction with the desired provider, users can efficiently convert audio files into written content. Additionally, the toolkit includes features for speech-to-speech conversions, allowing users to modify the voice in their audio with a straightforward voice-to-voice API that is compatible with leading AI services, thereby offering a versatile solution for various audio processing needs. With its broad range of functionalities, Orate stands out as a powerful tool for anyone looking to enhance their audio applications. -
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Unmixr
Unmixr
$7.50 per monthUnmixr is an advanced platform driven by AI that provides a comprehensive collection of tools aimed at improving content creation and communication. Its text-to-speech capability features more than 1,300 lifelike voices in 104 languages, allowing users to convert text of up to 200,000 characters into spoken words in one go. The platform's speech-to-text option ensures precise transcriptions of audio and video content, incorporating speaker identification and timestamps for better clarity. For users needing multilingual support, Unmixr's Dubbing Studio simplifies the process of translating and dubbing audio and video into over 100 languages through an efficient workflow that includes transcription, translation, and dubbing. Additionally, the AI chatbot harnesses various models, such as GPT-4o, Claude-3.5, Gemini Pro, and LLaMa-3.1, enabling users to participate in interactive dialogues and access documents like PDFs and web pages. Furthermore, Unmixr features an AI-driven image generator that creates stunning visuals from textual descriptions, accommodating a range of artistic styles to suit different needs. This combination of features positions Unmixr as a versatile tool for creators and communicators alike. -
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Charactr
Charactr
Utilizing our cutting-edge WaveThruVec model, you can convert written content into dynamic AI-generated speech through TTS or transform existing voice recordings into AI-created voices with Voice to Voice technology. Whether you need photo-realistic visuals or pixel art, our forthcoming Visual and Motion API allows you to create stunning animated and talking virtual characters that seamlessly integrate into your application, game, website, or media initiative. The API features an advanced collection of voices, including male, female, and distinctive synthetic options, perfect for incorporating natural and expressive vocal elements into your project. With these tools, the possibilities for enhancing user engagement and interaction are virtually limitless. -
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Google Cloud Text-to-Speech
Google
Utilize an API that leverages Google's advanced AI technologies to transform text into natural-sounding speech. With the foundation laid by DeepMind’s expertise in speech synthesis, this API offers voices that closely resemble human speech patterns. You can choose from an extensive selection of over 220 voices in more than 40 languages and their various dialects, such as Mandarin, Hindi, Spanish, Arabic, and Russian. Opt for the voice that best aligns with your user demographic and application requirements. Additionally, you have the opportunity to create a distinctive voice that embodies your brand across all customer interactions, rather than relying on a generic voice that might be used by other companies. By training a custom voice model with your own audio samples, you can achieve a more unique and authentic voice for your organization. This versatility allows you to define and select the voice profile that best matches your company while effortlessly adapting to any evolving voice demands without the necessity of re-recording new phrases. This capability ensures your brand maintains a consistent audio identity that resonates with your audience. -
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Inworld TTS
Inworld
$0.005 per minuteInworld TTS stands out as a cutting-edge text-to-speech solution that provides exceptionally realistic and context-aware speech synthesis alongside advanced voice-cloning features, all at an incredibly affordable price. Its leading model, TTS-1, is tailored for real-time usage, boasting low-latency streaming capabilities—where the first audio segment is available in about 200 milliseconds—and supports a wide array of languages such as English, Spanish, French, Korean, Chinese, and several others. Developers have the flexibility to utilize instant zero-shot voice cloning, requiring only 5 to 15 seconds of audio input, or opt for more detailed fine-tuned cloning, enabling the addition of voice-tags that convey emotion, style, and non-verbal cues, while also allowing for language switching without losing the unique voice identity. For those seeking even greater expressiveness and multilingual capabilities, the TTS-1-Max model is currently in preview, offering enhanced features. The platform accommodates various access methods, including API and portal options, and can operate in either streaming or batch modes, making it suitable for a diverse range of applications such as interactive voice agents, gaming characters, and bespoke audio branding experiences. With its versatility and advanced technology, Inworld TTS is poised to revolutionize how we interact with synthetic voices. -
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TheTechBrain AI
TheTechBrain
$25 per monthA comprehensive set of AI-powered tools designed to improve productivity and streamline workflows. Smart AI Tools is available as an app for both iOS and Google Play Store. It offers a variety of features and capabilities. Here's what to expect: AI Templates: A diverse collection of AI templates in various domains. Write high-quality content using AI algorithms. Visual Assets: Use an extensive library of images, illustrations and icons to enhance your creations. Text-to-Speech: Converts text into natural-sounding voice for audio content creation. Speech-to Text (STT): Transcribing audio and video recordings to written text for editing. Chat Assistants: AI-powered chat assistants automate customer service and engage in interactive conversation. Background Remover: Remove backgrounds from images with ease. -
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UntitledPen
UntitledPen
$12 per monthUntitledPen is an innovative platform that harnesses AI technology, allowing users to craft, enhance, and seamlessly convert text into lifelike, human-like voice-overs through sophisticated audio generation techniques. It boasts a user-friendly smart editor and a writing assistant designed for script creation, text refinement, and content enhancement in multiple languages. Users have the ability to easily transform text into speech or vice versa, select from various voice options, and tailor aspects such as tone, accent, and personality. With efficient commands that facilitate both writing and audio production, the platform also offers integrated voice editing tools for minor modifications. Ideal for applications like podcasts, videos, and presentations, it includes features for audio downloading and uploading, as well as intelligent transcription services to convert spoken words into polished written content. Currently available in open beta, UntitledPen encourages users to explore its features at no cost, providing an excellent opportunity to experience its full potential. The platform aims to redefine the way individuals interact with text and audio, making content creation more accessible and efficient than ever before. -
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aiOla
aiOla
aiOla is a deep tech Conversational, Voice, and Speech AI lab with an enterprise-level ASR foundation model and TTS technology. It’s designed to help enterprises and developers adapt speech technologies to any process, whether through seamless API integration or an intuitive in-house app – We specialize in speech-to-text and text-to-speech AI that deliver unmatched accuracy (95%), in any language, accent, jargon, vertical or acoustic environment. Our patented ASR technology, backed by world-renowned researchers, empowers enterprises to capture spoken data in real-time, structure it, and turn it into actionable insights through a centralized data platform. From empowering frontline workers with hands-free workflows to enabling voice AI agents with enterprise-grade ASR and TTS, aiOla seamlessly integrates into workflows, internal apps and products. With 120+ languages, robust privacy features, and real-time processing, we’re the trusted partner for enterprises looking to drive efficiency, collect more data and make smarter decisions through AI-driven conversational technology. -
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Whether you are creating a voice chatbot or utilizing an innovative text-to-speech application like Speak.ai, it is essential that the end product transcends a mere jumble of words. The significance of voice and tone surpasses the actual words used; in fact, elements such as tone, pauses, and speech pace play a vital role in enhancing the impact of your message. If we acknowledge that how something is conveyed can be just as important as the content itself, it becomes clear why SSML has gained popularity in this realm. Below are four markup techniques that can infuse your computer-generated voice with a more human-like quality, helping you forge stronger connections with clients, friends, partners, or anyone engaging with your content. Everyone knows that one brilliant storyteller; the individual capable of weaving words that transport us straight into the heart of the narrative. This is the person who masterfully employs a pause just before a story's climax, leaving us eager to exclaim, "What happened next?" It's this anticipation that makes the art of storytelling so captivating.
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CereWave AI
CereProc
CereProc is thrilled to unveil CereWave AI, our cutting-edge neural text-to-speech system that utilizes state-of-the-art machine learning techniques. Available now through the CereVoice Cloud, CereWave AI delivers speech that surpasses the naturalness of existing text-to-speech solutions, offering unprecedented human-like emphasis and intonation. This innovative model synthesizes audio waveforms from the ground up, leveraging a deep neural network that has undergone extensive training on vast quantities of speech data. Throughout the training process, the network learns to capture the fundamental characteristics of various voices, enabling it to generate highly realistic speech waveforms. Not only does CereWave AI create a voice that closely mimics human speech, but it also allows comprehensive editing and customization, making it possible to adjust the speech to any language, gender, accent, or age. Remarkably, while traditional text-to-speech systems often require around 30 hours of recorded material, CereWave AI can produce a high-quality voice with only 4 hours of data, revolutionizing the field of speech synthesis. This advancement signifies a major leap forward in accessibility and versatility for developers and users alike. -
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Murf API is a cutting-edge text-to-speech (TTS) solution that converts written content into highly realistic, human-like voiceovers with precision and ease. Designed for developers and businesses, it offers advanced features such as pitch and speed control, adjustable pauses, fine-tuned audio duration, and an extensive pronunciation library. With over 133 AI voices available in 20+ languages, including diverse regional accents, Murf API makes it simple to create localized and engaging audio content for global users. It supports multiple audio formats, including MP3, WAV, FLAC, ALAW, ULAW, and Base64, ensuring compatibility across different platforms. Backed by flexible, transparent pricing, strong security protocols, and detailed documentation, Murf API seamlessly integrates with websites, chatbots, IVR systems, and mobile applications.
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Capture the attention of your audience with CereProc's distinctive and lifelike text-to-speech (TTS) voices. The comprehensive development tools provided by CereProc enable seamless integration of award-winning TTS capabilities into your software applications. With a diverse selection of accents and languages, CereProc's TTS voices can effectively replace the default voice settings on your computer, tablet, or smartphone. Their innovative and budget-friendly online voice cloning tool empowers users to produce recordings from the comfort of home in just a few hours. CereProc is at the forefront of text-to-speech technology, creating voices that not only sound authentic but also possess unique character traits, making them ideal for various speech output needs. In addition to TTS servers and a software development kit, CereProc offers cloud services and custom voice options tailored for multiple applications, ensuring versatility in use. This commitment to quality and innovation sets CereProc apart in the realm of voice technology.
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AudioTextHub
AudioTextHub
AudioTextHub is a powerful, free online text-to-speech platform that uses advanced AI voice synthesis to transform text into natural-sounding, expressive speech within seconds. It offers a diverse library of more than 500 voices spanning multiple languages and regional accents, making it ideal for a global audience. Users can personalize the speech output by adjusting speed, pitch, and emphasis, ensuring the audio matches their specific style or requirements. The platform is optimized for fast, high-quality audio generation, helping content creators, educators, and developers save time and increase efficiency. Its easy-to-use API enables smooth integration of text-to-speech features into websites and applications. AudioTextHub prioritizes security, guaranteeing that all text data is processed confidentially and safely. The platform is suitable for accessibility projects, e-learning, podcasting, and more. Its combination of flexibility, speed, and natural voice quality makes it a top choice for transforming written content into engaging audio. -
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AssemblyAI
AssemblyAI
$0.00025 per secondTransform audio and video files, along with live audio streams, into text effortlessly using AssemblyAI's robust speech-to-text APIs. Enhance your audio intelligence capabilities through features such as summarization, content moderation, and topic detection, all driven by state-of-the-art AI technology. AssemblyAI is dedicated to delivering an exceptional experience for developers, offering everything from thorough tutorials and detailed changelogs to extensive documentation. With a focus on core speech-to-text functionality and sentiment analysis, our straightforward API provides a comprehensive range of solutions tailored to meet the speech-to-text requirements of any business. We cater to startups at various stages, from those just starting out to those in the growth phase, by offering affordable speech-to-text options. Our infrastructure is designed to scale efficiently; we handle millions of audio files daily for a diverse clientele, which includes numerous Fortune 500 companies. By utilizing Universal-2, our most sophisticated speech-to-text model, you can capture the nuances of human speech, resulting in more precise audio data that generates clearer insights. This commitment to accuracy and efficiency makes AssemblyAI a leading choice for organizations seeking to leverage audio data effectively. -
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Cepstral
Cepstral
At Cepstral, we concentrate solely on Text-to-Speech technology. Our mission is to develop lifelike synthetic voices capable of delivering messages with personality and flair, regardless of the platform. Whether it’s a compact device or an extensive installation, our voices transform content into engaging audio experiences on demand. By converting text into clear and natural speech, Cepstral enhances your ability to communicate effectively. Our text-to-speech solutions are designed for seamless integration with your existing systems and software architecture. Additionally, our dedicated support team is available to assist you with any inquiries. We invite you to reach out and discover how we can support your needs. Cepstral specializes in providing advanced speech technologies and services that facilitate the spoken transmission of information. Our high-quality, natural-sounding voices are developed for a variety of applications, including handheld devices, desktops, and servers. The ease of integration and efficient memory use of our technology make it a versatile choice for developers. Moreover, we have pioneered innovative methods for creating both general-purpose and specialized "domain voices," enabling the spoken output to be customized to suit specific applications. This flexibility ensures that your audio content resonates with your audience in a meaningful way. -
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TextSpeech Pro
Digital Future
$24.98 one-time payment 1 RatingTextSpeech Pro stands as an esteemed text-to-speech software, recognized globally as the premier choice in its category. It can convert text from various formats, such as Word documents, PDFs, Excel sheets, and RTF files, into speech using a diverse selection of voices and languages. The application allows users to export audio from the synthesized speech into multiple file formats, offering three distinct modes: quick, normal, and batch processing. Users can enhance their experience by creating and adjusting conversations, setting bookmarks, and inserting pauses through an advanced text-to-speech editor. Additionally, it enables real-time modifications of speech attributes, including voice selection, speed, volume, pitch, and word highlighting, along with managing speech entities like bookmarks and pauses. Furthermore, it facilitates the extraction of text from scanned documents, seamlessly converting it into speech or audio files. The software also features a comprehensive document editor equipped with extensive text processing capabilities, such as text manipulation, spell checking, print options, find and replace, customizable fonts, zoom functionality, and a view for document properties, ensuring a versatile user experience. With all these features, TextSpeech Pro is not just a tool but a complete solution for efficient and high-quality text-to-speech conversion. -
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Knovvu Text-to-Speech
Sestek
Enhance your customer interactions by providing personalized and human-like experiences that elevate their conversational journeys. Utilizing cutting-edge speech synthesis technology, we offer voices that resonate with customers, making their interactions enjoyable. This innovation significantly boosts self-service rates in customer-facing initiatives. While Text-to-Speech (TTS) technology is crucial for any self-service application, it is imperative that the voice sounds human-like to truly enhance the overall experience. With two decades of expertise in this field, our TTS voices can communicate with customers as smoothly as a live representative would. When customers engage with systems effortlessly, it leads to increased automation in processes and higher self-service rates. This not only conserves the valuable time of agents but also reduces operational costs significantly. In essence, TTS is a transformative technology that converts written text into natural-sounding speech, enabling businesses to provide top-notch self-service applications and enrich customer experiences. Thus, implementing TTS technology can be a game-changer for companies aiming to improve their customer service efficiency and satisfaction. -
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SoundHound
SoundHound AI
At SoundHound Inc., we envision a world where every brand has a distinct voice and individuals can effortlessly engage with the products around them through natural conversation. Collaborating with our strategic partners, we aim to foster a more inclusive and interconnected environment. Our mission includes developing tailored voice assistants for businesses that prioritize their brand identity, user engagement, and data security. Leveraging our proprietary Speech-to-Meaning® and Deep Meaning Understanding® technologies, the Houndify platform delivers a level of conversational intelligence that is unparalleled in the industry. Embrace the future with Houndify! By voice-enabling the world, we strive to create a voice AI platform that surpasses human capabilities, adding value and enjoyment through an expansive ecosystem enriched by innovation and monetization potential. With our headquarters situated in Silicon Valley, we operate as a global entity, boasting nine offices across essential markets and teams spanning 16 countries, all dedicated to transforming the way people interact with technology. Our commitment to enhancing user experiences through cutting-edge voice technology is at the core of everything we do. -
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TTSLabs
TTSLabs
TTSLabs empowers streamers to personalize their text-to-speech donations by allowing them to select custom voices, incorporate distinctive sound clips, and much more! The platform ensures smooth management and playback of text-to-speech features, facilitating straightforward adjustments to prices, voices, and audio clips. Remarkably, it can generate 20 seconds of audio in under 3 seconds, even on basic CPUs. Additionally, the desktop application can be synchronized so that moderators can manage text-to-speech settings via the Streamlabs or StreamElements dashboard. Viewers also have the opportunity to review the active alerts, available voices, sound clips, and the minimum donation amounts set for text-to-speech interactions. Don’t hesitate to reach out to us for your very own unique voice! With this service, you can access both your customized voice and other options during your stream. The dedicated desktop application offers processing speeds faster than real-time, and it is compatible with Streamlabs and StreamElements, complete with tailored guides to enhance the viewer experience. This innovative approach not only enriches the streaming experience but also fosters greater engagement between streamers and their audiences. -
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Voisi
Teknikforce
$67/year/ user Voisi is a groundbreaking AI-driven toolkit that transforms the creation, management, and application of voice and language content. It is perfect for a wide range of users, including businesses, educators, content creators, and developers, offering an extensive array of tools designed to improve and simplify your audio and language-related tasks. If you're aiming to produce realistic speech from text, convert spoken words into written format, or translate audio in various languages, Voisi delivers advanced solutions that are not only effective but also user-friendly. Key features of Voisi include: Text-to-Speech Conversion: This function allows users to turn written text into natural, human-like speech across numerous languages and accents, making it ideal for producing voice-overs, narrations, and interactive voice responses. Speech-to-Text Transcription: Easily convert audio recordings into written text with speed and precision. Additionally, Voisi's intuitive interface ensures that users can navigate its features effortlessly, making it accessible for everyone. -
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Kokoro TTS
Kokoro TTS
$0Kokoro TTS stands out as a powerful text-to-speech solution that offers support for multiple languages and customizable voice options. Boasting a 182 million parameter architecture, it produces high-quality audio in languages such as American English, British English, French, Korean, Japanese, and Mandarin. The tool provides realistic voice selections, automatic content segmentation, and compatibility with OpenAI, which aids in content creation and seamless application integration. Additionally, with the advantage of NVIDIA GPU acceleration, Kokoro TTS guarantees real-time audio generation, making it an ideal choice for a wide range of projects. Its versatility allows users to enhance their applications with engaging voiceovers. -
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ReadSpeaker
ReadSpeaker
Enhance customer engagement with realistic text-to-speech solutions. By integrating our voice technology, you can elevate your products and make your content more accessible to a wider audience through your websites and applications. Create your own audio files using our lifelike text-to-speech voices, which can also be utilized in various settings such as robots, public announcement systems, and IVRs. This technology empowers brands, organizations, and enterprises to provide an improved user experience while effectively reducing operational costs. No matter if you are catering to website visitors, mobile app users, online learners, or subscribers, text-to-speech ensures that you can meet the diverse preferences and requirements of each individual in how they engage with your services, apps, and content. Ultimately, this approach not only broadens your reach but also fosters a more inclusive environment for all users. -
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MARS6
CAMB.AI
CAMB.AI's MARS6 represents a revolutionary advancement in text-to-speech (TTS) technology, making it the first speech model available on the Amazon Web Services (AWS) Bedrock platform. This integration empowers developers to weave sophisticated TTS functionalities into their generative AI projects, paving the way for the development of more dynamic voice assistants, captivating audiobooks, interactive media, and a variety of audio-driven experiences. With its cutting-edge algorithms, MARS6 delivers natural and expressive speech synthesis, establishing a new benchmark for TTS conversion quality. Developers can conveniently access MARS6 via the Amazon Bedrock platform, which promotes effortless integration into their applications, thereby enhancing user engagement and accessibility. The addition of MARS6 to AWS Bedrock's extensive array of foundational models highlights CAMB.AI's dedication to pushing the boundaries of machine learning and artificial intelligence. By providing developers with essential tools to craft immersive audio experiences, CAMB.AI is not only facilitating innovation but also ensuring that these advancements are built on AWS's trusted and scalable infrastructure. This synergy between advanced TTS technology and cloud capabilities is poised to transform how users interact with audio content across diverse platforms. -
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Gemini 2.5 Pro TTS
Google
Gemini 2.5 Pro TTS represents Google's cutting-edge text-to-speech technology within the Gemini 2.5 series, designed to deliver high-quality and expressive speech synthesis tailored for structured audio generation needs. This model produces lifelike voice output that boasts improved expressiveness, tone modulation, pacing, and accurate pronunciation, allowing developers to specify style, accent, rhythm, and emotional subtleties through text prompts. Consequently, it is ideal for a variety of uses, including podcasts, audiobooks, customer support, educational tutorials, and multimedia storytelling that demand superior audio quality. Additionally, it accommodates both single and multiple speakers, facilitating varied voices and interactive dialogues within a single audio output, and supports speech synthesis in various languages while maintaining a consistent style. In contrast to faster alternatives like Flash TTS, the Pro TTS model focuses on delivering exceptional sound quality, rich expressiveness, and detailed control over voice characteristics. This emphasis on nuance and depth makes it a preferred choice for professionals seeking to enhance their audio content. -
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TTSynth
TTSynth
FreeTTSynth is an online tool that lets users create text-to-speech (TTS) conversions at no cost. To begin the process, simply type or paste your desired text into the designated input area of the TTS maker. You can select from various languages and voices available in the TTS online library to achieve the specific accent and tone you prefer. After making your selections, just click 'generate' to produce the audio and download the resulting TTS MP3 file. This free text-to-speech service ensures high-quality audio output and facilitates quick conversions across multiple languages with realistic and natural-sounding voices. TTS technology is designed to turn written text into audible speech, employing sophisticated TTS AI algorithms that allow devices to vocalize text, making it useful for numerous applications. Whether you're looking for a TTS maker to produce MP3 files, a TTS reader to vocalize documents, or an accessible text-to-speech solution, TTS offers a reliable and flexible tool for all these needs. Moreover, the versatility of TTS services spans various platforms and devices, enabling users to effectively utilize this technology in various contexts. -
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gpt-realtime
OpenAI
$20 per monthGPT-Realtime, OpenAI's latest and most sophisticated speech-to-speech model, is now available via the fully operational Realtime API. This model produces audio that is not only highly natural but also expressive, allowing users to finely adjust elements such as tone, speed, and accent. It is capable of understanding complex human audio cues, including laughter, can switch languages seamlessly in the middle of a conversation, and accurately interprets alphanumeric information such as phone numbers in various languages. With a notable enhancement in reasoning and instruction-following abilities, it has achieved impressive scores of 82.8% on the BigBench Audio benchmark and 30.5% on MultiChallenge. Additionally, it features improved function calling capabilities, demonstrating greater reliability, speed, and accuracy, with a score of 66.5% on ComplexFuncBench. The model also facilitates asynchronous tool invocation, ensuring that dialogues flow smoothly even during extended calls. Furthermore, the Realtime API introduces groundbreaking features like support for image input, integration with SIP phone networks, connections to remote MCP servers, and the ability to reuse conversation prompts effectively. These advancements make it an invaluable tool for enhancing communication technology.