Voice AI agent tools
36 voice tools in the AgentScout directory, each with a link-checked listing.
Updated
There are 36 voice tools: 16 open source, 1 source-available, 5 free or freemium, 13 paid, usage-based or enterprise, 1 pricing on the maker's site.
Quick comparison Top 10 of 36 listed below. Pricing as the maker states it; blank means we don't have it.
| Tool | Pricing | Best for | Open source |
|---|---|---|---|
| Freemium | Voiceover | ||
| Paid | Voice & phone calls | ||
| Open source | Voice & phone calls | Yes | |
| Open source | Voice & phone calls | Yes | |
| Open source | Build an agent | Yes | |
| Open source | Voice & phone calls | Yes | |
| Freemium | Voice & phone calls | ||
| Freemium | Voice & phone calls | ||
| Paid | Voice & phone calls | ||
| Paid | Voice & phone calls |
Tasks in this category
Showing 36 of 36 tools
Fish Audio
Fish Audio is a voice AI platform for text to speech, voice cloning and speech to text, with a real-time API for voice agents. Its Drama 3 and S2 models take inline emotion and delivery tags such as whispering, laughing or pauses, it can clone a voice from a few seconds of audio, and its library has more than two million community voices for narration, characters, audiobooks and support agents. The Fish Speech models behind it are published on GitHub and Hugging Face.
Added
CosVoice
CosVoice gives the AI assistant you already use (Grok Bot, ChatGPT, Claude, Cursor or any MCP client) a real US phone number in your area code and its own email address. It places and answers calls for you, such as booking a table or taking a contractor's quote, then sends a written summary and transcript to your inbox; connect it through its open-source (MIT) MCP server.
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XiaoZhi ESP32
Open-source voice chatbot firmware for ESP32 devices that talks through LLMs like Qwen and DeepSeek and controls hardware and services via MCP.
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Qwen Audio Agent
Real-time voice runtime from the Qwen Audio team that keeps agents talking while they think and work on tasks.
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ElevenLabs UI
Component library on shadcn/ui with orbs, waveforms and voice-agent components for building audio and agentic apps.
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ElatoAI
Realtime voice AI for ESP32 devices and toys with 100+ speech and LLM model options.
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Cartesia Sonic
Cartesia's real-time text-to-speech API with emotion control, built for low-latency voice agents.
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Speechmatics
Speech-to-text and voice AI APIs that handle accents, multiple speakers and multilingual speech for voice agents.
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Synthflow
Voice AI platform for enterprise call automation that deploys low-latency phone agents for sales and support.
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Goodcall
AI answering service whose voice agent works as a virtual receptionist for businesses from small shops to contact centers.
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Bolna
Platform for building, deploying and testing voice AI agents for recruitment, sales and customer support.
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Bland AI
Enterprise voice AI platform for building, deploying and monitoring phone agents with self-hosted models.
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Hume AI
Voice AI company focused on emotionally intelligent speech, with voice-native evaluation and human judgment tooling for voice agents.
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FunASR
ModelScope's speech recognition toolkit for offline, streaming and edge ASR, with VAD, punctuation, speaker diarization and OpenAI-compatible/MCP serving.
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Patter
Open-source SDK that gives your AI agent a phone number, handling speech, real-time voice and telephony carriers in Python or TypeScript.
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Dograh
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.
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Voiceloop
Zero-dependency JS library for an interruptible in-browser voice loop (VAD, STT, LLM, TTS).
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Cicero
Self-hosted voice interface for coding agents (Claude Code, Codex, ACP); talk from a browser or Telegram call.
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TryVoice
Hands-free voice runtime for coding agents with wake word, push-to-talk and streaming replies.
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LiveKit Agents
Real-time voice and video infrastructure with an agents framework.
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Pipecat
Open-source framework for voice and multimodal conversational agents.
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Vapi
Platform for building and deploying phone voice agents.
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ElevenLabs Agents
Voice AI platform with conversational agents and TTS.
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Retell AI
Builds AI phone agents for calls and support.
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Convai
Conversational AI for virtual worlds: voice-enabled characters and agents that perceive, speak and act inside games and 3D scenes.
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Inworld
Platform and runtime for real-time voice AI and interactive characters, including text-to-speech and agent orchestration for consumer apps.
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Simple Phones
AI phone agent that answers business calls, takes messages and books appointments.
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Thoughtly
AI voice agents for inbound and outbound calls for businesses.
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vocode
Open-source library for building voice-based LLM agents for phone calls and apps.
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Vision Agents
Stream's open framework for building real-time voice and video agents with any model.
Added
Vexa
Open-source meeting transcription API with bots for Meet, Teams and Zoom.
Added
VoiceMode
Adds natural voice conversations to Claude Code and other assistants.
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ClawCall
AI that places phone calls for you, navigates menus, waits on hold and talks to the person who answers.
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Deepgram
Speech-to-text, text-to-speech and voice agent APIs for building real-time voice agents.
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Dial
Gives an AI agent a real phone number for calls, SMS, iMessage and WhatsApp through one API.
Added
TEN Framework
Open-source framework for real-time multimodal voice agents, including the TEN Agent demo.
Added
Top voice repos on GitHub (20)
| Repo | GitHub stars | Licence | Last push |
|---|---|---|---|
| 33,333 | — | — | |
| 31,392 | MIT | 2026-10-21 | |
| 20,738 | MIT | 2026-10-21 | |
| 16,446 | BSD 2-Clause | 2026-10-21 | |
| 11,172 | Apache License 2.0 with additional conditions | 2026-10-21 | |
| 8,171 | Apache License 2.0 | 2026-09-23 | |
| 5,896 | BSD 2-Clause | 2026-10-20 | |
| 3,804 | MIT | 2024-11-15 | |
| 2,936 | — | 2026-10-21 | |
| 2,886 | Apache License 2.0 | 2026-10-09 | |
| 2,425 | — | 2026-10-16 | |
| 2,063 | — | 2026-10-21 | |
| 1,401 | MIT | 2026-10-21 | |
| 1,076 | — | 2026-08-24 | |
| 797 | — | 2026-10-21 |
Top 15 of 20 by stars. Stars and licence come from each repo, checked when the listing was last verified.
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Facts come from our directory listings; pricing is as each maker states it. Check official sites before you choose.