voice-agents

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

Conversational voice AI agents

Rapida is an open-source, end-to-end voice AI orchestration platform for building real-time conversational voice agents with audio streaming, STT, TTS, VAD, multi-channel integration, agent state management, and observability.

Open-source, self-hostable platform for building and operating AI phone agents.

Build realtime voice and video agents with Google's new Gemini 2.0 (API is free for now)

Set of 📝 with 🔗 to help those building Voice AI agents 🎙️🤖

Sayna is a unified Voice Layer for AI Agents with a seemless integration to an existing agentic frameworks

Official one-stop shop for AI Agents and developers building with Telnyx.

A New End-to-end Framework for Evaluating Voice Agents

DialogLab is an authoring tool for configuring and running Human-AI multi-party conversations.

A self-improving loop for voice AI agents. Uses karpathy's autoresearch as foundation.

Addressee detection for voice agents: device-directed speech detection that runs before STT, so background speech, side conversations, and the agent's own TTS echo never trigger it. No wake word, model-agnostic, drop-in for LiveKit, Pipecat, ElevenLabs, Twilio, and OpenAI. The layer your VAD and turn detection are missing.

React components for voice agents, chat, and generative UI. LiveKit, ElevenLabs, and OrbKit in one kit. Copy the source and make it yours.

A programmable Voice AI platform: SIP and WebRTC call control, multi-party mixing, recording, TTS/STT, and pluggable AI agents (ElevenLabs, VAPI, Pipecat, Deepgram) — all driven through a REST API, webhooks, and a WebSocket event stream

Self-hosted native-Rust runtime for real-time voice agents. Own the stack: one binary in your own VPC or air-gapped, no hosted control plane. pipecat-compatible pipeline, in-process SIP/RTP, single-process call density. Apache-2.0.

The ElevenLabs Agents SDK for TypeScript.

Open-Source CPAAS for Contact Center Teams.

Voice Prompts, GPT-4o prompts, Voice Agent Prompts, ChatGPT Prompts, HumeAI Prompts

Reusable AI coding agent skills for building voice AI with LiveKit

The runtime reliability layer for AI agents.