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.

Based, Patter works in open source.

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Open-source SDK for voice AI. Connect any AI agent to phone calls in 4 lines of code — pip install getpatter or npm install getpatter. Python & TypeScript, MIT licensed, sub-500ms latency.

The company sits in the open source segment, where it competes on its core product or service.

Website: getpatter.com