CodeRabbit is a code review tool where AI automatically reviews your pull requests (PRs). When you open a PR, it generates diff summaries, walkthroughs, and architecture diagrams, detects bugs and potential issues, and proposes fixes on a per-commit basis. It supports GitHub, GitLab, Azure DevOps, and Bitbucket, and also offers IDE extensions for VS Code, Cursor, and Windsurf plus a CLI, so you can get reviews even before opening a PR. Launched in the US in 2023, it has become one of the leading services in the AI code review space and holds SOC 2 Type II certification.
Key Features
- Automatic PR summaries and walkthroughs: When a PR is opened, it generates a summary of the changes, per-file explanations, and sequence or architecture diagrams, so reviewers can grasp the big picture before reading the diff
- Line-level review comments and 1-click fixes: Detects bugs, security concerns, and readability issues, and proposes concrete fix code. Suggestions can be committed directly with 1-click fixes
- Continuous learning from feedback: Learns your team’s preferences and coding conventions from replies to review comments and from accepted or rejected suggestions, applying them to future reviews
- Customization via YAML:
.coderabbit.yamllets you fine-tune review strictness, target paths, coding guidelines, and the review language (Japanese is also available) - IDE extensions and CLI: Extensions for VS Code, Cursor, and Windsurf plus a CLI let you review local changes before committing or opening a PR. The CLI is also designed to work with coding agents such as Claude Code
- Static analysis integrations: Ingests results from linters and SAST (static application security testing) tools and presents them alongside AI findings. Jira and Linear integrations connect reviews to issue tracking
Pricing
| Plan | Price (billed annually) | Key features |
|---|---|---|
| Free | $0 | PR summaries, reviews via IDE extensions and CLI (rate-limited), unlimited repositories |
| Pro | $24/month per user | Full reviews on PRs and CLI, 1-click fixes, learnings, linter/SAST integrations, Jira/Linear integrations |
| Pro Plus | $48/month per user | Everything in Pro + multi-repo analysis (10 repos), custom pre-merge checks, finishing touches such as unit test generation |
| Enterprise | Contact sales | SSO, audit logging, custom RBAC, self-hosting, SLA support |
Reviews for public (open-source) repositories are free, and paid plans come with a 14-day free trial (no credit card required).
Pricing information is as of August 2026. Please check the official site for the latest pricing.
Pros & Cons
✅ Pros
- Just opening a PR gives you a summary, diagrams, and review comments, greatly reducing the burden on human reviewers
- Findings come with concrete fix code that can be applied in one click, making the review-to-fix loop fast
- Because it learns from your team’s feedback, its findings converge toward your team’s style the more you use it
- Open-source repositories are free, and the IDE extensions and CLI have free tiers, so it is easy to start small
- Review comments can be configured in Japanese, making it easy to adopt for Japanese-speaking teams
⚠️ Cons
- AI findings include false positives and off-target comments, so a final human review is still a prerequisite
- Paid plans are billed monthly per user, so costs can grow quickly for larger teams
- Each plan has rate limits on reviews, and high-frequency PR workflows may hit the caps
- Since code is sent to an external service, some organizations’ security policies may require prior review (self-hosting is Enterprise only)
Comparison with Similar Services
| Criteria | CodeRabbit | GitHub Copilot code review | Qodo Merge | Greptile |
|---|---|---|---|---|
| Main use | End-to-end automated PR review | AI review within GitHub | PR review and description generation | PR review based on codebase understanding |
| Platforms | GitHub/GitLab/Azure DevOps/Bitbucket | GitHub only | GitHub/GitLab/Bitbucket and more | GitHub/GitLab |
| IDE / CLI | VS Code family extensions + CLI | IDE (Copilot integration) | IDE extensions and CLI | ─ |
| Learning / customization | Feedback learning + YAML config | Repository instruction files | Config files and rules | References full codebase context |
| Free tier | Free for OSS, Free plan available | Follows Copilot plans | Free tier for OSS | Trial-based |
Who Is It For
- Development teams short on reviewers, where waiting for PR reviews has become a bottleneck
- Teams that want a second opinion, clearing mechanical findings before human review
- Solo developers and OSS maintainers who want a free outside perspective on their code
- People who want one more check before merging code generated by coding agents such as Claude Code
Summary
CodeRabbit is an AI code review tool that covers everything from PR summaries to bug detection, fix suggestions, and learning your team’s conventions. It does not replace human review, but by handling the findings that can be caught mechanically, it lets reviewers focus on substantive discussions such as design decisions. Open source is free and paid plans offer a 14-day trial, so a good first step is to try it on your own repository and judge the quality of its findings.