PatterAI / Patter
Open-source voice-AI SDK. The Vapi/Retell alternative for builders who want to own the stack. Give your AI agent a phone number in 4 lines — Python and TypeScript, MIT licensed, Twilio, Telnyx, and Plivo.
Why this job: topics: text-to-speech, speech-to-text, voice-ai
What it does
Patter is the full voice stack between your application and the phone network — not just glue between an LLM and a carrier. It runs the agent loop and owns every layer of the call, and you pick the provider for each one. Compose them in Realtime, Pipeline, or Hybrid mode.
Get started
No single install command. Read the steps in the README (opens in new tab)
- Maintenance
- Active
- Last commit 2 months ago
- Stars
- 1,083
- +2 this week
- Licence
- MIT
- Allows business use
- Downloads for
- None listed
- No release files
- Latest version
- v0.7.0
- Released 4 months ago
- Built with
- Python
- 50% of the code
Is it looked after?
- Contributors
- 1
- Last 90 days
- Issues
- 100% closed
- 0 still open
- Pull requests
- 162 merged
- 11 waiting
- Releases
- 17
- 17 in the last year
- Contributing guide (opens in new tab)
- Security policy (opens in new tab)
- No code of conduct
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More: languages, topics and project record
Languages
- Python 50%
- TypeScript 44%
- HTML 5%
- CSS <1%
Topics
- ai-agent
- ai-phone-agent
- hermes-agent
- llm
- mastra
- open-source
- openai
- openclaw
- python
- realtime-api
- sdk
- speech-to-text
Project record
- JobSpeech and audio
- StatusListed
- Commits159
- Forks127
- Watching6
- Stars in 28 days+11
- CreatedApr 7, 2026
- First seen by usNov 7, 2026
- CheckedNov 7, 2026