Best AI Voice Agents for OpenAI

Intervo is a robust, open-source platform that serves as an enterprise-grade voice and chat AI agent system, aimed at enhancing the automation of real-time customer interactions in both voice and text formats. It empowers organizations to effortlessly create, train, and launch personalized agents within minutes, all without the need for coding; users simply specify the agent's role, upload relevant knowledge materials, select a preferred voice engine such as ElevenLabs or Azure, and deploy the agent across various integrated channels. The platform's agents are versatile and can handle a range of applications, including lead qualification, customer support, AI receptionist duties, interactive product guidance, and internal assistance for departments like HR and IT. They are capable of integrating with telephony services through Twilio, linking to several large language model backends like OpenAI, Claude, and Gemini, while also orchestrating complex AI workflows and being embedded on websites as interactive widgets. With a strong focus on scalability, compliance, and adaptability, Intervo enables businesses to incorporate contextually aware conversational agents that can effectively address intricate inquiries, route calls efficiently, and engage users through both speech and chat interfaces. This makes it an ideal solution for organizations looking to enhance their customer engagement strategies while maintaining flexibility in their operations.

Kore.ai enables enterprises worldwide to harness the power of AI for automation, efficiency, and customer engagement through its advanced AI agent platform and no-code development tools. Specializing in AI-powered work automation, process optimization, and intelligent service solutions, Kore.ai provides businesses with scalable, customizable technology to accelerate digital transformation. The company takes a model-agnostic approach, offering flexibility across various data sources, cloud environments, and applications to meet diverse enterprise needs. With a strong track record, Kore.ai is trusted by over 500 partners and 400 Fortune 2000 companies to drive their AI strategies and innovation. Recognized as an industry leader with an extensive patent portfolio, it continues to push the boundaries of AI-driven solutions. Headquartered in Orlando, Kore.ai maintains a global presence with offices in India, the UK, the Middle East, Japan, South Korea, and Europe, ensuring comprehensive support for its customers. Through cutting-edge AI advancements, Kore.ai is shaping the future of enterprise automation and intelligent customer interactions.

ContactSwing is a AI Voice Agent which makes and answers calls like a human. It is a 24/7 AI Calling Solution that does not require a code. Our intelligent AI-based call system ensures that no inquiry is left unanswered and captures all inbound interest. Our AI call assistant instantly answers inquiries and sets up appointments, allowing your business to run 24/7. Our AI Phone Agent automates repetitive tasks such as follow-ups and scheduling, answering FAQs etc., saving time. ContactSwing AI Agents allow you to: Answer and make calls 24/7 Book Appointments Effortlessly Follow up with leads Integrate your CRM/ATS. Send Bulk SMS using SMS AI Agent Email AI Agent allows you to respond to emails.

Cognigy.AI is an enterprise-grade conversational AI platform designed to automate customer interactions across various channels, including voice and chat. Leveraging advanced natural language understanding (NLU) and large language models (LLMs), it enables businesses to create intelligent AI agents capable of delivering personalized, human-like conversations. The platform offers robust integration capabilities, allowing seamless connectivity with existing contact center and CRM systems to enhance customer experience orchestration. With features like Agentic AI, Cognigy.AI introduces autonomous, goal-oriented agents that can think, adapt, and collaborate with both AI and human agents, navigating complex queries with flexibility and precision. This comprehensive solution empowers organizations to streamline customer service operations, improve engagement, and achieve higher efficiency in handling customer inquiries.

LiveKit is a real-time communication platform that empowers developers to integrate video, voice, and data functionalities into their applications seamlessly. Utilizing WebRTC technology, it caters to a wide array of frontend and backend frameworks. The network architecture of LiveKit is meticulously designed to ensure ultra-low latency, exceptional resilience, and the capacity to scale massively. Our globally distributed team oversees an infrastructure that processes billions of audio and video minutes monthly, demonstrating our extensive reach. The platform offers SDK support for all leading platforms, enabling developers to create their applications with a LiveKit client that is natively tailored to their chosen environment. Moreover, LiveKit allows for self-hosting at no cost, requiring no modifications to your code since the entire suite of tools and services adheres to the Apache 2.0 open-source license. With a plethora of features, LiveKit includes single sign-on (SSO) and role-based access control (RBAC) for teams, robust security measures such as end-to-end encryption, as well as tools for noise and echo cancellation, session recording, stream ingestion, and moderation, making it an ideal choice for developers. In essence, LiveKit stands out as an all-encompassing solution for real-time communications, providing everything needed to build highly interactive applications.

Answering AI is an innovative call-answering solution powered by artificial intelligence, designed to provide round-the-clock support for your phone calls, guaranteeing that your customers receive prompt assistance at any time. Establishing your virtual receptionist is an easy process: you simply need to outline your preferences for call management, much like crafting a prompt for ChatGPT. The system is designed to integrate flawlessly with your current phone systems, calendars, and call forwarding configurations, allowing the AI to handle appointment scheduling, direct intricate questions to your staff, and keep everything synchronized across various platforms. Answering AI is suitable for a wide range of sectors, including small enterprises, legal practices, e-commerce businesses, healthcare providers, creative firms, software as a service (SaaS) organizations, and teams working remotely. Among its standout features is a customizable smart call button for your website that adjusts based on visitor interactions, context-aware intelligence that personalizes discussions according to the caller's activity on your site, and intelligent call routing that assesses when to address inquiries or connect callers with human specialists. This comprehensive approach not only enhances customer experience but also streamlines communication across all business functions.

Genspark offers a powerful AI platform designed to assist in creating content and automating complex tasks, such as generating videos and images or conducting in-depth research. The Genspark Super Agent elevates the platform’s capabilities by handling a variety of personal and professional tasks, such as gift selection, travel planning, and restaurant reservations. Users can leverage the platform’s AI tools to produce creative content, analyze data, and automate daily processes with minimal effort, all powered by the versatile Super Agent.

AgentVoice is a sophisticated platform designed for creating AI-driven voice agents capable of managing phone calls and performing various tasks, such as scheduling meetings, sending messages, and updating customer relationship management systems, all without the need for programming expertise. Each interaction is processed through advanced speech recognition technology to convert spoken words into text, a large language model that decides on responses and actions, and a voice generated by AI that communicates in a natural manner. These agents not only reply but also carry out tasks in real-time or post-call by utilizing actual data, memory capabilities, and access to tools. Users can effortlessly design no-code workflows to enhance CRM updates, arrange meetings, send follow-up communications, screen potential leads, manage voicemails, and filter unwanted calls, all within a single call. The setup process is remarkably quick, allowing users to create and deploy a fully functional agent in under 30 minutes without needing to write any code: simply outline your agent's parameters, select a voice, integrate with over 200 native tools, utilize low-code alternatives, or leverage a comprehensive API and webhooks, and then either upload or generate a script tailored to your needs. With its user-friendly interface and efficient capabilities, AgentVoice transforms the way businesses interact over the phone, enhancing productivity and streamlining operations.

GPT-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.

Layercode is a cloud-based platform designed for developers that simplifies the creation of production-ready, low-latency voice AI agents by managing the real-time infrastructure, allowing developers to concentrate on the logic of their agents; it takes care of WebSockets, voice activity detection, global edge deployment, and voice model integrations while providing comprehensive control over the agent’s thinking, speech, and responses. This platform facilitates seamless and natural voice interactions with sub-second response times and human-like conversational turn-taking, while also offering tools for monitoring various metrics such as call performance, latency, and production failures. Layercode integrates effortlessly with contemporary TypeScript and Next.js frameworks, supported by user-friendly CLI and SDK tools for easy text communication. Additionally, it empowers developers to bypass vendor lock-in through the ability to easily switch between different voice and transcription model providers, ensures complete adaptability by allowing integration of custom AI agent backends, and supports deployment across various platforms, including web, mobile, and telephony interfaces. Overall, Layercode enhances flexibility and efficiency in developing sophisticated voice-driven applications.

Fluents.ai presents an AI-powered sales assistant that engages potential leads within moments through its empathetic and intelligent conversational capabilities. This innovative solution empowers companies to expand their outreach efforts while maintaining a personal connection, effectively serving as an AI sales representative. It integrates flawlessly with current software systems, initiating human-like dialogues instantly while gathering essential data, responding to inquiries, and enabling smooth transitions to human agents when needed. The platform also features real-time dashboards, detailed conversation transcripts, and sophisticated reporting tools, providing valuable insights to optimize sales tactics. By automating labor-intensive tasks such as setting appointments and managing follow-ups, the AI assistant boosts productivity, allowing sales teams to concentrate on high-priority activities. Additionally, its 24/7 operation guarantees that no potential opportunity slips through the cracks, ultimately driving revenue growth for businesses. This robust technology not only streamlines processes but also enhances the overall efficiency of sales operations.

Automated voice testing, monitoring and more. Test your AI voice agent with 1000s of simulated users within minutes. It's hard to get AI voice agents right. LLM outputs can be affected by a small change in the prompts, function calls or model providers. We are the only platform that can support you from development through to production. Hamming allows you to store, manage, update and sync your prompts with voice infra provider. This is 1000x faster than testing voice agents manually. Use our prompt playground for testing LLM outputs against a dataset of inputs. Our LLM judges quality of generated outputs. Save 80% on manual prompt engineering. Monitor your app in more than one way. We actively track, score and flag cases where you need to pay attention. Convert calls and traces to test cases, and add them to the golden dataset.

Johnni AI serves as the ideal virtual receptionist, guaranteeing that you never miss a phone call again. This sophisticated AI-driven assistant takes charge of your business communications, infusing a personal touch into scheduling appointments and summarizing discussions to free up your valuable time. Johnni AI effortlessly integrates with your current software and CRM systems, expertly managing inquiries, bookings, and phone calls without a hitch. Tailored specifically to meet the unique needs of your business, Johnni AI allows you to concentrate on more critical responsibilities by streamlining call management. Operating 24/7, this virtual receptionist handles calls, schedules appointments, summarizes discussions, and offers customizable interactions, ensuring every customer feels acknowledged and appreciated. Furthermore, by automating the intricate details of call handling and appointment management, Johnni AI creates a consistently outstanding experience for your clients at all hours of the day. With such capabilities, your business can thrive while maintaining exceptional customer service.

Kipps.AI serves as a robust platform tailored for enterprises aiming to create and implement AI agents across various channels like voice, chat, and WhatsApp, efficiently managing millions of dialogues with a level of human-like intelligence and the reliability expected in large-scale operations. This solution empowers businesses to customize agents for various purposes, including lead qualification, appointment scheduling, customer support, and beyond, all while seamlessly integrating with CRM systems, telephony solutions, and numerous other operational tools. With over 100 ready-to-use integrations, including popular platforms like Salesforce, HubSpot, WhatsApp, Slack, and Zoom, Kipps.AI offers a wealth of features such as comprehensive analytics at both the model and agent levels, conversation transcription capabilities, real-time call streaming, sentiment analysis, and the ability to escalate interactions to human representatives when necessary. Furthermore, the platform ensures enterprise-level security compliance, boasting certifications like SOC 2 Type II, ISO 27001, and HIPAA-readiness, alongside PCI DSS Level 1 standards and options for zero data retention, making it a trustworthy choice for organizations looking to enhance their customer engagement strategies. In addition, Kipps.AI's advanced technology makes it not just a tool, but a strategic partner for businesses seeking to innovate and improve their communication processes.

Inagent is a cutting-edge conversational AI solution tailored for contact centers, featuring autonomous AI agents that excel in comprehending, reasoning, and managing intricate customer interactions across both voice and text channels within a comprehensive omnichannel framework. Utilizing generative AI and contextual awareness, these virtual agents are adept at deciphering messages, making informed decisions, and carrying out tasks linked to business systems like CRM and ERP platforms to fulfill defined operational objectives. This platform empowers organizations to assemble specialized teams of AI agents trained in various business sectors, ensuring precise and effective management of responsibilities such as customer support, sales, appointment coordination, and claims processing, while also facilitating smooth transitions of conversations between AI agents and human representatives when necessary. One of the standout features of Inagent is its rapid deployment capability, allowing activation within minutes through an intuitive no-code interface that only necessitates basic training with existing business knowledge. Furthermore, this innovative technology not only improves operational efficiency but also enhances customer satisfaction by providing timely and accurate responses.

In 2024, the OpenAI Realtime API was unveiled, providing developers the capability to build applications that support instantaneous, low-latency interactions, exemplified by speech-to-speech conversations. This innovative API caters to various applications, including customer support systems, AI-driven voice assistants, and educational tools for language learning. Departing from earlier methods that necessitated the use of multiple models for speech recognition and text-to-speech tasks, the Realtime API integrates these functions into a single call, significantly enhancing the speed and fluidity of voice interactions in applications. As a result, developers can create more engaging and responsive user experiences.