CodeRabbit

What is CodeRabbit?

CodeRabbit is an AI code-review agent that automatically reviews pull requests on GitHub, GitLab, Bitbucket and Azure DevOps, plus commits in VS Code, Cursor and Windsurf via IDE and CLI review — a different job from every other coding-agents listing in this category, which write or generate code rather than review it. It raised a $60M Series B in September 2025 led by Scale Venture Partners, with participation from Nvidia's NVentures and CRV alongside existing investors Harmony Partners, Flex Capital, Engineering Capital and Pelion Venture Partners, valuing the company at roughly $550M on $88M total raised. NVIDIA is a named customer — CEO Jensen Huang is quoted on CodeRabbit's own site saying "We're using CodeRabbit all over NVIDIA" — alongside other named customers Mastra, Langflow, Clerk, TaskRabbit, Swiggy and Visma.

What does CodeRabbit do?

A pull request or commit triggers CodeRabbit to clone the repository into a sandboxed environment and run a multi-step review: it leaves a PR summary, line-by-line comments, and flags bugs and security issues, backed by linters and SAST tools on paid plans. Its "autofix" and "advanced finishing touches" features (unit test generation, simplifying suggested changes, merge-conflict resolution) go beyond passive commentary by proposing or applying concrete fixes, and an agentic chat interface lets a developer follow up on any comment conversationally. A separate Slack Agent add-on ($0.50 per agent-minute) extends this into incident investigation and ad hoc code generation from within Slack. The underlying system is a multi-model backend CodeRabbit built itself rather than a single off-the-shelf model: Claude Opus, Sonnet and Haiku handle orchestration, structured review tasks and context distillation respectively, alongside OpenAI models for parts of the review pipeline — users cannot choose or swap the underlying model.

Key features

• Automatic PR review across 4 code hosts: Reviews pull requests on GitHub, GitLab, Bitbucket and Azure DevOps — broader host coverage than most single-purpose review tools in this category.
• IDE and CLI pre-commit review: Reviews code directly in VS Code, Cursor or Windsurf, or via CLI, before a commit is even pushed — not just after a PR is opened.
• Autofix and advanced finishing touches: Proposes or applies concrete fixes, generates unit tests, simplifies suggested diffs, and resolves merge conflicts — beyond leaving comments alone.
• Agentic review chat: A conversational interface lets a developer question or push back on any specific review comment.
• Multi-model orchestration: Combines Claude (Opus/Sonnet/Haiku) and OpenAI models internally, matching model to task complexity rather than exposing one general-purpose model.

What are CodeRabbit's use cases?

• Automated first-pass review on every PR: A team wires CodeRabbit into GitHub or GitLab so every pull request — whether written by a human or another coding agent — gets an automatic summary, line comments and bug/security flags before a human reviewer looks at it.
• Pre-commit review in the editor: A developer runs CodeRabbit's VS Code, Cursor or Windsurf integration to catch issues before ever opening a pull request.
• Reviewing AI-generated code specifically: A team that already uses a code-writing agent (Cursor, Claude Code, Devin) adds CodeRabbit as an independent, automatic reviewer of that agent's output rather than relying solely on human review.

What does CodeRabbit integrate with?

• GitHub
• GitLab
• Bitbucket
• Azure DevOps
• Jira
• Linear
• VS Code
• Cursor
• Windsurf
• Slack (via paid Slack Agent add-on)

Why use CodeRabbit?

• A genuinely different job than every other listing in this category — purpose-built PR/commit review rather than code generation, so it complements a coding agent instead of competing with it.
• Broadest code-host coverage among reviewed tools: GitHub, GitLab, Bitbucket and Azure DevOps, plus VS Code/Cursor/Windsurf IDE and CLI review.
• Real, substantial funding and a credible enterprise reference customer: a $60M Series B (Sept 2025) at a ~$550M valuation led by Scale Venture Partners with Nvidia's NVentures and CRV, and NVIDIA's own CEO publicly using it.
• A genuine free tier — unlimited public and private repos for PR summaries and IDE/CLI review, not just a capped trial — plus a 14-day trial of the paid Pro Plus tier with no credit card required.

Pros & cons

CodeRabbit pricing

Free for unlimited public/private-repo PR summaries and IDE/CLI review, with a 14-day trial of Pro Plus included; paid per-seat tiers run $24/user/month (Pro) and $48/user/month (Pro Plus, billed annually), with custom-priced Enterprise adding API access, SSO/RBAC and self-hosting.

• Free$0 / /month
• Pro$24 / /user/month (billed annually)
• Pro Plus$48 / /user/month (billed annually)
• EnterpriseCustom / contact sales

See current pricing on coderabbit.ai ↗Compare CodeRabbit alternatives →

CodeRabbit review

CodeRabbit occupies a genuinely different slot in this category than any other listing: it reviews pull requests and commits automatically rather than writing code from a prompt, so it complements a coding agent instead of competing with it. The free tier is real (unlimited repos for PR summaries and IDE/CLI review, not just a capped trial), the funding and NVIDIA reference customer are independently corroborated, and its four-host coverage (GitHub, GitLab, Bitbucket, Azure DevOps) is broader than most single-purpose review tools. The real costs show up going deeper: API access and self-hosting are Enterprise-only, and per-seat paid pricing stacks on top of whatever already generates the code being reviewed.

The one listing in this category built to review code rather than write it — a genuine free tier and broad host coverage, but API access and self-hosting are Enterprise-only.

Frequently asked questions