head to head · open source
pi vs prettier
pi has 119,586 GitHub stars, 15,353 forks, 202 open issues and last shipped yesterday. prettier has 52,405 stars, 5,023 forks, 1,462 open issues and last shipped yesterday. pi leads on adoption by 128% (119,586 vs 52,405 stars). pi is written in TypeScript under MIT; prettier is written in JavaScript under MIT. pi has attracted 13% as many forks as stars, prettier 10%. 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.
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Side by side
| pi | prettier | |
|---|---|---|
| GitHub stars | ★ 120K | ★ 52K |
| License | MIT | MIT |
| Written in | TypeScript | JavaScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 15K | ⑂ 5.0K |
| 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 prettier if
- You want the prettier feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and prettier 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 prettier
Opinionated Code Formatter JavaScript · TypeScript · Flow · JSX · JSON CSS · SCSS · Less HTML · Vue · Angular GraphQL · Markdown · YAML Your favorite language? Intro Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re printing it with its own rules that take the maximum line length into account, wrapping code when necessary. Input Output Prettier can be run in your editor on save, in a pre commit hook, or in CI environments to ensure your codebase has a consistent style without devs ever having to post a nit picky comment on a code review ever again!…
read the full prettier overview →
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Frequently asked questions
Is pi or prettier more popular?
pi has 119,586 GitHub stars and prettier has 52,405. pi has the larger community by that measure.
Are pi and prettier free?
Both are open source. pi is licensed under MIT and prettier under MIT. Neither carries a licence fee.
What is the difference between pi and prettier?
pi is written in TypeScript and prettier in JavaScript. 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 prettier?
Choose pi if you want the larger community (119,586 stars) or its MIT licence terms. Choose prettier if its feature set, stack or MIT licence fits better. Both are self-hostable.