head to head · open source
pi vs tau
pi has 119,586 GitHub stars, 15,353 forks, 202 open issues and last shipped yesterday. tau has 5,182 stars, 234 forks, 9 open issues and last shipped 2 days ago. pi leads on adoption by 2,208% (119,586 vs 5,182 stars). pi is written in TypeScript under MIT; tau is written in Go under BSD-3-Clause. pi has attracted 13% as many forks as stars, tau 5%. pi 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.
← all 20902 open source comparisons
Side by side
| pi | tau | |
|---|---|---|
| GitHub stars | ★ 120K | ★ 5.2K |
| License | MIT | BSD-3-Clause |
| Written in | TypeScript | Go |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 15K | ⑂ 234 |
| 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 tau if
- You want the tau feature set and don't need the biggest community
- You prefer the BSD-3-Clause license terms
- Your stack matches Go
- You evaluated both and tau 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 tau
Development Environment Build Your Application Deploy and Run Quick Start Run Locally The quickest way to try Taubyte is to spin up a local environment with dream → Deploy Deploy Taubyte to your own Servers and/or VMs: Manual deployment → Automated deployment with Spore Drive → Prefer Video? Check out the Hitchhiker's Guide to Taubyte for guided walkthroughs and demos: Staying ahead Star us on GitHub and be instantly notified of new releases. Contributing Tau thrives with your help. Fix bugs, add features, improve docs, or guide the community. How to contribute Fork → branch from main → make changes → test →…
More in Developer Tools
Related comparisons
More AI Assisted Coding projects
Compare either of these against the rest of the AI Assisted Coding field.
Frequently asked questions
Is pi or tau more popular?
pi has 119,586 GitHub stars and tau has 5,182. pi has the larger community by that measure.
Are pi and tau free?
Both are open source. pi is licensed under MIT and tau under BSD-3-Clause. Neither carries a licence fee.
What is the difference between pi and tau?
pi is written in TypeScript and tau in Go. 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 tau?
Choose pi if you want the larger community (119,586 stars) or its MIT licence terms. Choose tau if its feature set, stack or BSD-3-Clause licence fits better. Both are self-hostable.