Open-source voice AI agent frameworks (2026)

Open-source frameworks and tools for building voice agents that listen, think and talk in real time. Here are all 11 from the AgentScout directory.

How we picked and ranked: tools are matched by category, the pricing each maker states and what each tool says it does. They are ranked by GitHub stars as recorded on each listing (link checks 2026-10-18); tools without a tracked repo follow, by listing maturity. No paid placements.

1. P

   1. Pipecat

   voiceOpen source★ 16,446 GitHub stars

   Open-source framework for voice and multimodal conversational agents.

   Pricing (as stated): Open source · Mature

2. T

   2. TEN Framework

   voiceOpen source★ 11,172 GitHub stars

   Open-source framework for real-time multimodal voice agents, including the TEN Agent demo.

   Pricing (as stated): Open source · Mature

3. V

   3. Vision Agents

   voiceOpen source★ 8,171 GitHub stars

   Stream's open framework for building real-time voice and video agents with any model.

   Pricing (as stated): Open source · Mature

4. D

   4. Dograh

   voiceOpen source + cloud★ 5,896 GitHub stars

   Self-hostable voice agent platform with a visual call-flow builder, bring-your-own speech and LLM providers and MCP control, pitched as an open alternative to Vapi and Retell.

   Pricing (as stated): Open source + cloud · Mature

5. V

   5. vocode

   voiceOpen source + cloud★ 3,804 GitHub stars

   Open-source library for building voice-based LLM agents for phone calls and apps.

   Pricing (as stated): Open source + cloud · Active

6. V

   6. Vexa

   voiceOpen source + cloud★ 2,886 GitHub stars

   Open-source meeting transcription API with bots for Meet, Teams and Zoom.

   Pricing (as stated): Open source + cloud · Active

7. V

   7. VoiceMode

   voiceOpen source★ 1,401 GitHub stars

   Adds natural voice conversations to Claude Code and other assistants.

   Pricing (as stated): Open source · Active

8. T

   8. TryVoice

   voiceOpen source★ 160 GitHub stars

   Hands-free voice runtime for coding agents with wake word, push-to-talk and streaming replies.

   Pricing (as stated): Open source · Early

9. C

   9. Cicero

   voiceOpen source★ 64 GitHub stars

   Self-hosted voice interface for coding agents (Claude Code, Codex, ACP); talk from a browser or Telegram call.

   Pricing (as stated): Open source · Early

10. V

    10. Voiceloop

    voiceOpen source★ 6 GitHub stars

    Zero-dependency JS library for an interruptible in-browser voice loop (VAD, STT, LLM, TTS).

    Pricing (as stated): Open source (MIT) · Early

11. L

    11. LiveKit Agents

    voiceOpen source + cloud

    Real-time voice and video infrastructure with an agents framework.

    Pricing (as stated): Open source + paid cloud · Mature

FAQ

What are the best open-source voice AI agents?

Ranked by tracked GitHub stars, the top open-source voice AI agents in our directory are Pipecat, TEN Framework, Vision Agents, Dograh, vocode. Stars measure popularity, not fit, so compare a few against your own task.

How many open-source voice AI agents does AgentScout list?

11 tools match. This page shows the top 11. Pricing mix on this page: Open source (7), Open source + cloud (4).

How much do these tools cost?

Pricing is what each maker states on their site. Open-source tools are free to self-host but may need a paid model API key or offer paid cloud plans; freemium tools have a free plan with limits. Check each official site.

Where can I see every tool for building voice agents?

Our task page lists all 47 tools we match to building voice agents.

Related: All tools for building voice agents · Best AI Voice Agent Platforms · voice (11)

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Facts come from our directory listings; pricing is as each maker states it and can change. Check official sites before you choose.