Patter
Open-source SDK that gives your AI agent a phone number, handling speech, real-time voice and telephony carriers in Python or TypeScript.
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About Patter
Patter is listed in our voice category and is aimed at builders. Open-source SDK that gives your AI agent a phone number, handling speech, real-time voice and telephony carriers in Python or TypeScript. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-18.
Patter at a glance
- Category: Voice
- Built for: Developers and teams building with AI agents
- Pricing: Open source (as the maker states it)
- Licence: MIT License (OSI-approved open source)
- GitHub: PatterAI/Patter · 1,077 stars (as of Oct 21, 2026)
- Latest release: v0.7.0 — Inworld integration, security …, Jun 30, 2026
- Last commit: Aug 24, 2026
- Official site: getpatter.com
- Listed on AgentScout: Oct 18, 2026
Patter FAQ
What is Patter?
Open-source SDK that gives your AI agent a phone number, handling speech, real-time voice and telephony carriers in Python or TypeScript.
How much does Patter cost?
Patter's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Patter open source?
Yes. Patter's GitHub repository is published under the MIT License, according to the licence file in the repo.
Where can I find Patter's source code?
On GitHub at PatterAI/Patter, which had 1,077 stars as of Oct 21, 2026. The latest release is v0.7.0 — Inworld integration, security hardening, pipeline barge-in fix (Jun 30, 2026).
What are alternatives to Patter?
Similar tools include Pipecat, Vapi, TEN Framework, Dial, Synthflow and CosVoice.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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Patter alternatives
Other voice tools in our directory. See all voice tools →
Pipecat
Open-source framework for voice and multimodal conversational agents.
Vapi
Platform for building and deploying phone voice agents.
TEN Framework
Open-source framework for real-time multimodal voice agents, including the TEN Agent demo.
Dial
Gives an AI agent a real phone number for calls, SMS, iMessage and WhatsApp through one API.
Synthflow
Voice AI platform for enterprise call automation that deploys low-latency phone agents for sales and support.
CosVoice
CosVoice gives the AI assistant you already use (Grok Bot, ChatGPT, Claude, Cursor or any MCP client) a real US phone number in your area code and its own email address. It places and answers calls for you, such as booking a table or taking a contractor's quote, then sends a written summary and transcript to your inbox; connect it through its open-source (MIT) MCP server.
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🏆 Ranked in: Best AI Voice Agent Platforms
🧭 Task guides: Voice and phone agents for building AI agents
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