A code review tool that automatically reviews pull requests; the free plan only gives summaries, not line-by-line review. Open-source projects have a separate free plan.
Free Version Limitations
US$0 per user per month with unlimited public and private repos, but PRs get only a summary rather than line-by-line review. Rate limits: 1 PR review per developer per hour, 3 in the IDE and 3 in the CLI, up to 150 files per review, and chat Q&A is not available (source: docs.coderabbit.ai/management/plans). There is also a separate free Open Source plan for open-source projects: 1 to 10 PR reviews per hour depending on how active the project is, 1 in the IDE, 3 in the CLI, 100 to 300 files per review and 25 chats. Newly registered organisations also get a 14-day Pro Plus trial with no credit card, dropping back to Free on the renewal date once it expires or is cancelled. The rate quota resets on a rolling hourly basis, and the site does not say whether you are queued once it is used up, only that a Fair Usage Policy applies. (Verified 2026-08-09)
Available Models And Quantity
Model
Free quota
Calculate Time Window
Description
PR 自動審查
Once per hour
Rolls over hourly
The free tier only gives summaries, not line-by-line review.
Free Usage Limit
Features
Free quota
Description
PR review
1
1 per hour per developer, summary only
In-IDE review
3
3 times per hour
CLI review
3
3 times per hour
Cap on files per run
150
Not processed once exceeded
Chat Q&A
Free tier not available
Quota Resets At
Rolling reset every hour
Terms Of Use
Can be attached to unlimited public and private repos; newly registered organizations get a 14-day Pro Plus trial, no credit card required
Free Version For Commercial Use
Yes
Common Pitfalls
The free plan looks generous (unlimited repos), but it only gives PR summaries, not line-by-line review — and line-by-line review is where this tool's real value is. The genuinely good deal is the Open Source plan for open-source projects, which allows up to 10 PR reviews and 25 chats per hour.
US$30/developer/month is the monthly list price. ⚠️ The official pricing page only shows US$24, labeled "Billed annually" — US$24 is the annual monthly-equivalent price; the US$30 monthly price comes from the official docs at docs.coderabbit.ai/management/plans.
Which Model
CodeRabbit review model
Usage Quota
line-by-line review, no rate limit (governed by the Fair Usage Policy)
Long-form writing and document quality are its strengths, with the paid version including the Claude Code engineering tool
FreeThe quota is calculated based on a rolling 5-hour usage window (not simply resetting at a fixed number every day), and general conversations can be used for around 10-20 times, excluding Claude Code.
AI code editors are a staple in the engineering community
FreeHobby: 2000 times of completion + 50 times of slow progress requests (confirmed on the official website on 2026-07-26, but the official website no longer lists these numbers in detail, only mentioning limited quota, and the specific numbers are now only seen in third-party community sources, keeping the record but adjusting the confidence level to medium)
The most popular AI completion tools have a hidden benefit of being free for students
FreeThe general user free tier includes 2,000 completions and 50 chats per month. Open-source maintainers and teachers can upgrade to Pro for free. The free student plan has reopened for new applications since 2026-06-17, after being suspended since 2026-04-20 for 58 days. As of 2026-07-27, the model selection for Free and Student plans has been limited to only Auto, and manual model specification is no longer available, while Pro and above plans are not affected.
A code review tool. The free plan lets you connect unlimited public and private repos, but only gives PR summaries, not line-by-line reviews. There's a separate, dedicated free plan for open-source projects.
