PatterAI/Patter

Health v2 · maintenance only

Flags: young

Adoption not part of the score

1039 stars · 116 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Patter is an open-source, MIT-licensed SDK (Python and TypeScript) that connects AI agents to real phone calls, handling telephony, speech-to-text, text-to-speech, and real-time audio streaming. It lets developers pick providers per layer (LLM, STT, TTS, carrier like Twilio/Telnyx/Plivo) and runs self-hosted with no per-minute platform fees.

Use cases

• give my AI agent a phone number
• build a voice bot that answers phone calls
• open-source alternative to Vapi or Retell
• connect an LLM agent to Twilio calls
• build an AI receptionist that takes phone calls
• run speech-to-text and text-to-speech pipeline for phone calls
• self-host voice AI without per-minute fees

When to choose

• you want to own the full voice stack and self-host it
• you need provider flexibility across LLM, STT, TTS, and carriers
• you want Python and TypeScript SDKs with API parity
• you want to avoid per-minute charges from hosted voice-AI platforms

When to avoid

• you want a fully managed hosted service with no infrastructure to run
• you need a turnkey no-code voice agent builder
• you need telephony providers beyond Twilio, Telnyx, or Plivo

Facets

library · maturity active

speech-recognition tts llm-inference agent-framework sdk websocket audio-processing artificial-intelligence speech-processing developer-tools python cross-platform self-hosted voice-ai telephony twilio telnyx plivo voice-agent phone-calls realtime vapi-alternative retell-alternative speech-to-text text-to-speech mit-license ai-agents automation nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="PatterAI/Patter")