Best AI Voice Agents for JavaScript

MirrorFly is a custom CPaaS provider powering businesses and enterprises with real-time communication, such as instant messaging, voice calls, and video conferencing through Chat APIs and SDKs. Regardless of the use case, tech stack, and devices, MirrorFly supports brands across the world to build their own chat platform with complete customization and zero limitations. MirrorFly’s Key CPaaS Benefits: ✅ Host on Your Own Server ✅Unlimited Customization ✅ Complete Data in Your Hand ✅ 1000+ Features ✅ Custom Security (Gmail, Phone, BioMetric, etc) ✅ Upload Enlarged Files (3+ GB) ✅ Mulit-tenant Server ✅ Scale 1+ Billion Concurrent Users ✅ Free Migration & Integration ✅ Hire Your Own Dedicated Team

Voiceflow is an operating system for AI customer experience that helps businesses create conversational agents for customer support, sales, lead generation, call centers, and self-service automation. It enables teams to design AI workflows visually while also giving developers access to APIs, code functions, integrations, and customization tools. The platform is built for teams that want to ship AI agents faster, test changes with confidence, and roll out improvements that remain compatible as usage grows. Voiceflow supports web, phone, and mobile experiences, helping companies serve customers across multiple channels from one platform. Its agent builder combines agentic playbooks with deterministic workflows, allowing teams to balance AI flexibility with structured business logic. The observability suite uses LLM-powered evaluations, logs, and metrics to help teams understand agent behavior and make faster iteration decisions. Production environments support a real development pipeline from design to staging and final launch, all hosted on Voiceflow. Businesses can connect agents to tools such as Zendesk, Salesforce, Shopify, HubSpot, Airtable, Google Sheets, Make, Gmail, and other applications. With model flexibility, enterprise compliance, and collaboration features, Voiceflow helps organizations automate customer conversations while maintaining control, visibility, and security.

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.

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.

Bland is an innovative platform that leverages artificial intelligence to streamline phone communications for businesses, offering convincingly human-like conversational agents capable of managing various tasks such as sales, scheduling, and customer service. Its robust, self-hosted infrastructure guarantees swift response times, impressive uptime of 99.99%, and stringent security measures. The platform empowers companies to develop tailored phone agents that can communicate in multiple languages, navigate intricate workflows, and seamlessly connect with current systems. By providing affordable and scalable AI solutions, Bland assures enterprises that their calls are conducted effectively while maintaining a personalized and natural tone. Additionally, this technology not only enhances operational efficiency but also significantly improves customer engagement through its advanced capabilities.