Coderabbit
An AI code reviewer that posts line-by-line feedback and summaries on every pull request.
CodeRabbit is an AI code reviewer that installs as a bot on GitHub, GitLab, Azure DevOps, or Bitbucket and comments on every pull request automatically: a summary and walkthrough plus line-by-line suggestions flagging likely bugs, edge cases, and style issues. You reply to it in the PR thread, tune it via .coderabbit.yaml, and it learns from your feedback.
CodeRabbit is an AI reviewer that installs as a bot on your Git host and comments on every pull request automatically. When a PR opens or updates, it posts a high-level summary and walkthrough of the change, then leaves line-by-line suggestions on the diff — flagging likely bugs, missing edge cases, and style issues — the same way a human reviewer would in the review thread.
It is aimed at teams that want a consistent first-pass review on every PR without waiting on a human, and at individuals who want to start on the free $0 plan — PR summaries and IDE/CLI reviews on both public and private repos, with a 14-day Pro Plus trial. It runs on the server, so there is nothing to add to your editor or CI to get a review.
Highlights
- PR summaries and walkthroughs — every pull request gets a generated description, a file-by-file walkthrough, and an optional sequence/architecture diagram of what changed.
- Line-by-line review comments — actionable suggestions on the diff with one-click committable fixes, plus a "Fix with AI" handoff for larger changes.
- Conversational review — reply to the bot in the PR thread to ask why a comment was made, request a re-review, or have it open an issue from the discussion.
- Learnings — it remembers feedback you give it (e.g. "we allow this pattern") and applies those preferences on future PRs across the repo.
- Configurable guidelines — a
.coderabbit.yamllets you set path-based and AST-based rules, and it runs 40+ static analysis and linting tools as part of each review. - Multi-platform — works on GitHub, GitLab, Azure DevOps, and Bitbucket, with IDE and CLI review modes in addition to the PR bot.
In an AI-assisted workflow
CodeRabbit sits between "open PR" and "request human review." When an agent like Claude Code or Cursor generates a branch, CodeRabbit reviews the resulting PR automatically, so machine-written diffs get a second pass before a teammate looks. You interact with it directly in the PR thread:
@coderabbitai Why is this comment flagged as a race condition?
@coderabbitai Generate unit tests for the changed functions.
@coderabbitai This pattern is intentional in our codebase — remember it.TIP
Commit a .coderabbit.yaml early. Encoding your conventions as path instructions cuts noise on the first few PRs far faster than dismissing comments one at a time.
Good to know
CodeRabbit's Free plan is $0/user and covers both public and private repos, but it is limited to PR summaries and IDE/CLI reviews, plus a 14-day trial of Pro Plus. The full line-by-line reviewer, linters, and SAST tools are gated to paid tiers: Pro ($24/user/month, billed annually) adds those line-by-line reviews, full codebase context, the issue planner, linters and SAST tools, and Jira/Linear integrations; Pro Plus ($48/user/month) adds advanced finishing touches (unit test generation, merge-conflict resolution) and higher rate limits; Enterprise adds SSO/SAML, custom RBAC, self-hosting, and an SLA at custom pricing. It reviews but does not merge — it is a reviewer, not an autonomous agent, so a human still approves and merges.
Frequently asked questions
- What is CodeRabbit?
- CodeRabbit is an AI reviewer that installs as a bot on your Git host and comments on every pull request automatically. When a PR opens or updates, it posts a high-level summary and walkthrough, then leaves line-by-line suggestions on the diff — flagging likely bugs, missing edge cases, and style issues — and you can reply to it in the review thread.
- How much does CodeRabbit cost?
- The Free plan is $0/user and covers public and private repos, but is limited to PR summaries and IDE/CLI reviews plus a 14-day Pro Plus trial. Pro ($24/user/month, billed annually) adds line-by-line reviews, full codebase context, linters and SAST tools, and Jira/Linear integrations; Pro Plus ($48/user/month) adds unit test generation and merge-conflict resolution; Enterprise adds SSO/SAML, custom RBAC, and self-hosting at custom pricing.
- How do I use CodeRabbit?
- It runs on the server, so there is nothing to add to your editor or CI — once installed, every PR gets reviewed. You interact in the PR thread with commands like @coderabbitai Generate unit tests for the changed functions, ask why a comment was made, or tell it a pattern is intentional so it remembers. It reviews but does not merge — a human still approves and merges.
Related
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