vapi-alternative 开源项目推荐（12 个）

dograh-hq /dograh

开源语音 AI 平台。Vapi 和 Retell 的自托管替代方案。支持本地部署，可在语音到语音或 LLM/STT/TTS 中 BYOK，提供可视化工作流构建器、原生 MCP 和电话支持。

PatterAI /Patter

Open-source voice-AI SDK. The Vapi/Retell alternative for builders who want to own the stack. Give your AI agent a phone number in 4 lines — Python and TypeScript, MIT licensed, Twilio, Telnyx, and Plivo.

ferosai /feros

Open-source voice agent OS. Rust runtime, AI-driven builder, sub second latency. Self-host everything.

getphoneflow /phoneflow

The Open Source Voice Agent Platform - Build voice agents by connecting nodes in a canvas, deploy them to handle inbound and outbound phone calls, and monitor every call, latency and cost.

blackdwarftech /siphon

The open-source foundation for production Voice AI. Build, scale, and own your AI calling infrastructure. Bridge legacy SIP to modern LLMs over ultra-low latency WebRTC pipelines. Zero platform fees, BYOK, and full data sovereignty.

guidify-ai /vapi-studio

Open Source & Free tools for VAPI

elifalanrocha /openring

Open-source, self-hosted voice AI agents with a Vapi-compatible API. Bring your own keys or run 100% local and free (Whisper, Ollama, Kokoro). Calls on Twilio, Telnyx and Genesys, campaigns, model routes with fallback, cost per call. No per-minute platform fee. One command: npx openring

Oxeegen /OxeePhone

OxeePhone, Oxeegen's self-hosted voice agent platform: visual agent builder on your own models (BYOK), Vapi-style call detail and reports, configuration analysis with automatic fixes tested on real calls, MCP tools for AI agents. Fork of Dograh.

cnghockey /ai-caller

AI语音代理API——给你的代理一个电话，使用Bitcoin Lightning按通话付费。不注册，不订阅。MCP本地人。Vapi、Retell、平淡无奇的替代品。

Santidelacarrera /omnivoice-agent

Autonomous Ultra-Low Latency (<700ms) AI Voice Agent. Real-time WebRTC audio streaming, smart interruption engine, and stateful function calling for automated B2B customer operations.

s-block /voxos

Open-source, self-hosted AI agent for voice, phone calls, SMS, WhatsApp and MCP tools.

ajayshelke8586-del /panthm

PANTHM AI Labs: Sovereign Enterprise Voice AI SDRs (<200ms Latency), Indian SIP Telephony, Turnkey Autonomous Agents & WhatsApp Integration.