# CodeRabbit > AI code review that comments on every pull request, with PR triage, change explanations and security monitoring. CodeRabbit is an AI code review tool. CodeRabbit is installed on GitHub or GitLab, where it reviews every pull request and comments with fixes that can be committed. CodeRabbit also ranks the review queue, explains large diffs and monitors code for security issues. Reviews are free on public repositories, and paid plans start with a trial. **Best for:** Engineering teams whose volume of pull requests, especially from coding agents, is growing faster than human reviewers can handle. - Official site: https://www.coderabbit.ai - Listed in: [AI Code Assistant](https://trendhub.net/ai-tools/category/code-assistant), [DevOps & Monitoring](https://trendhub.net/ai-tools/category/devops-monitoring) - Last checked: 2026-10-09 (facts taken from coderabbit.ai) - Source page: https://trendhub.net/ai-tools/coderabbit-ai-code-review-pull-requests ## Key facts - Platforms: Web, Plugin, API, MCP, Discord - Pricing model: Subscription - Free plan: Yes - Free trial: Yes - API: Yes - Made by: CodeRabbit Inc. ## What is CodeRabbit? CodeRabbit is an AI code review service that reads each pull request and leaves comments with suggested, committable fixes. It installs as an app on GitHub or GitLab and is also available in the IDE and from a command line. The product is organised around four areas. Review handles the automated feedback, learns a team's conventions from replies and can loop with coding agents until issues are resolved. Triage scores and ranks open pull requests, routes them to suitable reviewers and shows the queue as a Kanban board. Change Stack explains large diffs through semantic diffs, blast-radius context and architecture diagrams. Security runs scheduled deep scans and checks on every PR, verifies findings and opens a fix. An agent for Slack helps with incident investigation, support cases and planning. Paid plans come with a 14-day trial, and reviews on public repositories are free. ## Key features - **Automated PR Reviews**: Posts line-level comments on each pull request, with a severity label and a suggestion that can be committed directly. - **Learnings**: Records corrections from developers, such as a repository convention, and applies them to later reviews. - **Pre-Merge Checks and Post-Merge Actions**: Enforces rules like title or docstring checks before merging and runs follow-ups such as changelog updates afterwards. - **Triage**: Scores pull requests by value and risk, suggests a reviewer and lays the queue out on a board. - **Change Stack**: Breaks a very large diff into an explanation of what it means, with impact shown across layers of the system. - **Security Monitoring**: Scans the codebase and dependencies on a schedule and per PR, confirms a finding and proposes the repair in a pull request. ## Use cases - **Reviewing Agent-Written Code**: Check large pull requests produced by coding agents before a human approves them. - **Clearing a Review Backlog**: Rank a long PR queue so high-impact and high-risk changes are looked at first. - **Enforcing Team Standards**: Apply custom checks for descriptions, titles and documentation on every merge. - **Catching Vulnerable Dependencies**: Detect a known advisory in a dependency during review and receive a ready fix. - **Investigating Incidents from Slack**: Let the agent cross-reference an alert with recently merged changes and suggest a cause. ## Things to know - **Hourly review allowance**: There is no cap on total pull requests or repositories, but each plan has a per-developer hourly review limit under a fair usage policy. - **Plan names changed**: The plans formerly called Pro and Pro Plus are now Essentials and Team; the pricing FAQ says the rename did not alter prices. - **Usage-based extras**: Reviews beyond the included limit, full codebase security scans and agent minutes are billed separately, with an optional monthly spending cap. - **Security features by plan**: Continuous security monitoring and security review of every PR are part of Advanced and Enterprise only. ## FAQs ### What is CodeRabbit? CodeRabbit is an AI code review tool that automatically reviews pull requests and comments with suggested fixes. It also offers PR triage, diff explanations and security monitoring. ### What is CodeRabbit used for? CodeRabbit is used to review code changes before they are merged, prioritise open pull requests, understand large diffs and watch a codebase for security issues. ### Is CodeRabbit free? CodeRabbit is free for public repositories: installing it on a public repo gives free reviews with no extra setup. Private use is paid, and every plan starts with a free trial lasting 14 days, with no credit card needed. ### How much does CodeRabbit cost? CodeRabbit sells Essentials, Team, Advanced and Enterprise plans priced per developer, plus usage-based add-ons. Figures are not given here because the currency could not be confirmed; see the official pricing page. ### Which platforms does CodeRabbit work with? CodeRabbit works on GitHub and GitLab pull requests, inside the IDE and through a CLI, and has agents for Slack and Discord. ### Does CodeRabbit have an API? Yes, but CodeRabbit lists API access under the Enterprise plan. Lower plans include MCP connections instead. ### Will CodeRabbit charge for every developer in my organisation? No. CodeRabbit says you are only charged for developers who create pull requests, and seats can be reassigned at any time. ### Can CodeRabbit be self-hosted? Yes. CodeRabbit lists a self-hosting option and an EU SaaS deployment among its Enterprise features. --- Source: https://trendhub.net/ai-tools/coderabbit-ai-code-review-pull-requests (trendhub)