You searched a paid product
Vapi does 2 jobs: voice agents, phone calls (telephony). Most projects replace one or two of them, so pick the job you actually need.
We track 3 open-source alternatives to Vapi, but none currently has confirmed commercial use, local running and no paid services together. Bolna, LiveKit Agents and Pipecat cover all 2 Vapi jobs.
Open-source orchestration framework for LLM voice agents that make and take phone calls over Twilio or Plivo.
Python framework for real-time voice agents as server-side participants in LiveKit WebRTC rooms, with STT/LLM/TTS plugins.
Open-source Python framework for real-time voice and multimodal agents that plugs together STT, LLM, TTS and transports.
No project meets all of your requirements. The list below shows what you'd need to relax.
We hid them because something is missing, unknown or conflicting. Here's what.
Yes. Pipecat is free to download and run on your own computer without paid API keys. It covers every job we list for Vapi.
Yes, with LiveKit Agents (Apache-2.0), Pipecat (BSD-2-Clause) and Bolna (MIT). Check the hardware notes and licence conditions on each page before you start.
Yes, with LiveKit Agents (Apache-2.0), Pipecat (BSD-2-Clause) and Bolna (MIT). Check the hardware notes and licence conditions on each page before you start.
Confirmed: Bolna and Pipecat. With conditions: LiveKit Agents. This is not legal advice; read each licence.
Bolna, LiveKit Agents and Pipecat cover every job we list for Vapi.