head to head · open source
pi vs T3 Code
pi has 119,586 GitHub stars, 15,353 forks, 202 open issues and last shipped yesterday. T3 Code has 41,350 stars, 9,068 forks, 1,628 open issues and last shipped yesterday. pi leads on adoption by 189% (119,586 vs 41,350 stars). pi is written in TypeScript under MIT; T3 Code is written in TypeScript under MIT. pi has attracted 13% as many forks as stars, T3 Code 22%. T3 Code was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| pi | T3 Code | |
|---|---|---|
| GitHub stars | ★ 120K | ★ 41K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 15K | ⑂ 9.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick pi if
- You weight community size — 120K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick T3 Code if
- You want the T3 Code feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and T3 Code fits your workflow better
About pi
New issues and PRs from new contributors are auto closed by default. Maintainers review auto closed issues daily. See CONTRIBUTING.md. Pi Agent Harness This is the home of the Pi agent harness project including our self extensible coding agent. @earendil works/pi coding agent : Interactive coding agent CLI @earendil works/pi agent core : Agent runtime with tool calling and state management @earendil works/pi ai : Unified multi provider LLM API (OpenAI, Anthropic, Google, …) To learn more about Pi: Visit pi.dev, the project website with demos Read the documentation, but you can also ask the agent to explain…
About T3 Code
T3 Code T3 Code is an "agent harness control surface". It enables control of the agents on your machine with a best in class mobile app (iOS, Android), web app and Electron based desktop app. Works with your subscriptions on Claude Code, Codex, Cursor, Grok Build, OpenCode, and Google Antigravity. If they're set up on your computer, T3 Code can control them. "Wait, what are you selling me?" Nothing. We built T3 Code because we wanted the best possible development experience with agents. We were inspired by existing solutions like the Codex desktop app, Conductor, Claude Desktop and Cursor Glass, but none met our…
read the full T3 Code overview →
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Frequently asked questions
Is pi or T3 Code more popular?
pi has 119,586 GitHub stars and T3 Code has 41,350. pi has the larger community by that measure.
Are pi and T3 Code free?
Both are open source. pi is licensed under MIT and T3 Code under MIT. Neither carries a licence fee.
What is the difference between pi and T3 Code?
pi is written in TypeScript and T3 Code in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, pi or T3 Code?
Choose pi if you want the larger community (119,586 stars) or its MIT licence terms. Choose T3 Code if its feature set, stack or MIT licence fits better. Both are self-hostable.