How 
Tailwind CSS ships
Tailwind CSS released in 0 of the last 12 weeks; pull requests got a first review in 40 hours and merged in 11 hours (median).
- Repository
- tailwindlabs/tailwindcss
- Updated
- Oct 18
Release weeks
0/12
PRs merged
5/week
Commits
5/week
Merged PRs per week
Reviewed < 1 dayWaited longerNo review
21
Jul 26Aug 9Aug 23Sep 6Sep 20Oct 4
Reviews
Last 12 weeks- Review wait
0h
- Time to merge
0h
- Merged unreviewed
0%
Commits
180 commitsLessMore
People
PRsReviewsCommitsRobinMalfait273056
lazerg4–4
timneutkens1–3
otarampinelli2––
kwy4042––
How code gets to production
Experimental · read Oct 18 from branch rules and PR checks
Gates on main
Rules every merge must pass, as set today
- Changes go through a PR
- Not public
- Approvals required
- Not public
- Code owners must approve
- Not public
- Required checks
- 1
- Force-push blocked
- Signed commits
- Linear history
- Merge queue
Of the last 50 merges: 26 approved, 24 merged without the required review.
What runs on every PR
Checks that ran on the last 50 merged PRs
100%
had any check
2
merged failing
- TestsIntegration Tests98%
- BuildCI98%
- AI reviewGreptile Apps100%
How other teams ship
Same numbers, same 12 weeks, from their public GitHub.
Storybook
storybookjs/storybook
- Review wait
- 21h
- To merge
- 39h
- Shipped
- 10/12
Svelte
sveltejs/svelte
- Review wait
- 29h
- To merge
- 33h
- Shipped
- 5/12
Vite
vitejs/vite
- Review wait
- 16h
- To merge
- 23h
- Shipped
- 9/12
Astro
withastro/astro
- Review wait
- 8.1h
- To merge
- 21h
- Shipped
- 12/12
Payload
payloadcms/payload
- Review wait
- 2h
- To merge
- 12h
- Shipped
- 8/12
Angular
angular/angular
- Review wait
- 2.8h
- To merge
- 24h
- Shipped
- 12/12
How we count
- Weeks with a release
- Weeks in the last 12 with at least one GitHub release, production deploy, merge to a production branch or version tag, whichever the team uses most.
- Review wait
- Median time from a pull request being ready for review to its first review by someone else.
- Time to merge
- Median time from opening a pull request to merging it. Automerges with no review are left out.
- Merged without review
- Share of merged pull requests that nobody other than the author reviewed.
- People and agents
- Everyone who committed, merged or reviewed in the last 12 weeks. AI agents that work under their own account are listed apart.
- By AI agents
- Share of merged pull requests opened by an AI agent, or of commits made by one, whichever is higher. Agents are Claude, Copilot, Codex, Devin and similar, plus a team's own bots whose pull requests read like an engineer's (varied titles, a written description), such as opencode-agent or posthog[bot]. Release, dependency and CI bots don't count.
- Reviewed by AI
- Share of merged pull requests that an AI reviewer commented on: CodeRabbit, Copilot, Greptile, Codex or a team's own review bot. Any bot that leaves review comments counts; approval-only, CI and code-scanning bots don't. AI reviews don't count toward review wait or merged without review.