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 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 maintainers who want to start free — public repositories get CodeRabbit's reviews at no cost, and every paid plan opens with a 14-day 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.yaml lets 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.

Good to know

Plans, as of September 2026 from coderabbit.ai/pricing: the free option is the open-source plan — install CodeRabbit on a public repository and its reviews stay free forever — and every paid plan opens with a 14-day trial. Essentials (the renamed Pro tier) is $30/developer/month, or $24 billed annually, and carries the agentic PR and CLI reviews, one-click fixes, learnings, coding-agent loops, linters and SAST tools, and Jira/Linear integrations. Team (the renamed Pro Plus tier) is $60/developer/month, or $48 annually, adding triage, multi-repo analysis, custom pre-merge checks, finishing touches such as unit-test generation and merge-conflict resolution, and higher limits. Advanced is $72/developer/month billed annually and layers on continuous security monitoring plus a security review of every PR; Enterprise is custom-priced with SSO, custom RBAC, audit logging, self-hosting, and an SLA. Two add-ons meter separately: usage-based reviews at $0.25 per reviewed file once a plan's included limit is reached, and CodeRabbit Agent at $0.40 per agent minute. It reviews but does not merge — it is a reviewer, not an autonomous agent, so a human still approves and merges.