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

Open-source Python framework for building AI calling agents. No per-minute fees, no vendor lock-in. Full control over infrastructure, data, and costs. Production-ready with scaling.

AI voice agent API — give your agent a phone, pay per call with Bitcoin Lightning. No signup, no subscription. MCP-native. Alternative to Vapi, Retell, Bland.

Build production-ready voice AI agents with an open, self-hostable runtime engineered for sub-second latency and enterprise-grade scale.