vapi-alternative

Here are 3 public repositories matching this topic...

ferosai / feros

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

open-source text-to-speech real-time self-hosted speech-recognition multi-language speech-to-text conversational-ai automation-platform voice-ai agent-framework voice-agent enterprise-ai agentic-ai vapi-alternative voice-orchestration

Updated Apr 27, 2026
Rust

blackdwarftech / siphon

Sponsor

Star

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.

Updated Mar 29, 2026
Python

cnghockey / ai-caller

Star

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.

bitcoin mcp telephony lightning-network conversational-ai pay-per-use ai-api no-signup voice-agent ai-phone-agent l402 model-context-protocol ai-voice-agent ai-calling outbound-calling vapi-alternative voice-ai-api retell-alternative bland-alternative

Updated Apr 21, 2026

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