OpenRing – self-hosted voice AI agents with a Vapi-compatible API

OpenRing is an MIT-licensed, self-hosted voice AI agent platform that runs on your own machine or server with your own provider keys and no platform fee, speaking the same JSON as Vapi so clients can migrate by changing the base URL. It runs each call as a Pipecat pipeline (speech-to-text, model, voice) and supports Vapi-style assistants, tools, webhooks, phone numbers, campaigns, knowledge bases, squads and SIP trunks, with a free local stack of Whisper, Ollama and Kokoro. It starts with `npx openring` on Node.js 18 or later, and calls, transcripts and keys stay on your server with no telemetry.