CodeRabbit
AI code review that catches bugs before humans do
AICoding score
Introduces a token-bucket rate limiter on the login endpoint (src/middleware/rateLimit.ts) and wires it into the auth flow. Also adds a config block and a unit test. Overall well-structured; two issues below — one a likely production bug.
The 60s window is hardcoded. Reading it from config lets you tune per environment (and tighten prod) without a redeploy — also avoids a secret-adjacent magic number.
@coderabbitai can you suggest a fix for the off-by-one?
Change line 51 to `if (count >= limit) return 429`. Want me to commit it? You can also click "Fix with AI".
A real CodeRabbit run: summary + diagram on every PR, line-by-line comments with severity, and a chat thread you can reply to with @coderabbitai.
Quick Verdict
8.2 / 10 — The safe-default AI code reviewer in 2026: best PR ergonomics, the only tool spanning all four major Git platforms, a free tier that actually works, and SOC 2 + ISO 27001 security. CodeRabbit is what most teams should turn on first.
CodeRabbit is not a coding agent — it is the reviewer that sits downstream of your AI coding tools (Claude Code, Cursor, Copilot) and checks their output before a human merges. It posts a summary, an architectural diagram and line-by-line comments on every PR, with 40+ linters/SAST under the hood and a codegraph for cross-file context.
Its pitch is speed and signal: the fastest time-to-first-comment (~45s) and the lowest noise among AI reviewers, tuned in plain English via .coderabbit.yaml.
The trade-off is recall — it reasons over the diff, so it misses more cross-file/intent bugs than repo-indexing rivals like Greptile, and it is verbose out of the box until tuned. For most teams shipping AI-generated code, that is the right default; pair it with SonarQube or Greptile when you need deterministic gates or deeper bug recall.
Use CodeRabbit if…
- You want a fast, low-noise first-pass reviewer on every PR with zero setup
- Your repos span GitHub, GitLab, Bitbucket and/or Azure DevOps
- You want a free tier that scales to paid only when rate limits bite
- You care about SOC 2 / ISO 27001 and zero data retention
Skip CodeRabbit if…
- You need the deepest bug recall on monorepos — Greptile indexes the whole repo
- You require on-prem deployment below Enterprise pricing — self-hosting is Enterprise-only
- You want the reviewer to auto-merge — it is advisory; merge gating stays in your CI
Core Features
PR summaries & sequence diagrams
Every pull request gets a natural-language TL;DR of what changed and why, a walkthrough of the diff, and an auto-generated architectural sequence diagram for non-trivial flows. Reviewers stop mentally tracing call stacks across a dozen files — the context arrives ready-made. The summary is the single most-praised CodeRabbit feature in G2 reviews.
Agentic reviews + one-click auto-fix
CodeRabbit flags real bugs (not just style) and offers a "Fix with AI" button on Pro: it spawns its own coding agent to write the change and commit it back to the branch. You review the diff instead of writing it. It is advisory by default — it will not auto-merge, and merge gating is configurable per repo.
Chat & learnings on every comment
Reply to any comment with @coderabbitai to ask "why is this a security risk?" or "suggest a safer alternative", and the bot answers in thread. Dismiss a comment and the agent learns your preference for next time — reviews improve continuously from your feedback, no retraining required.
Codebase intelligence (Codegraph + AST)
Under the LLM sits a deterministic layer: a codegraph of cross-file dependencies, AST-based analysis that catches semantic bugs (not just syntax), and 40+ linters and SAST scanners that filter false positives. This scanner backstop is why CodeRabbit catches more than raw-LLM reviewers and why its security findings are trusted.
Plain-English review rules
Tune the bot in a .coderabbit.yaml file written in plain English — "never use console.log in production", "always add error boundaries". No DSL, no JSON rule files. Most teams spend 1-2 weeks calibrating to cut noise; the config is a living document as conventions evolve. "Source lines" (2026) even traces each comment back to the rule or scanner that triggered it.
External context: MCP, Jira/Linear, Web
CodeRabbit pulls in the right context: MCP servers (Postgres, logs, docs) for live systems, linked Jira/Linear tickets for intent, and Web Query to fetch the latest API docs. Combined with IDE and CLI review, the same engine covers PR time, pre-commit and in-editor — before code even reaches a human.
Security & Compliance
SOC 2 Type II
Independently audited every year — the baseline enterprise buyers require.
ISO 27001
Certified information-security management across the platform.
Zero data retention
Your code is analyzed and immediately deleted post-review — never used to train models.
Encrypted & isolated
Code encrypted in transit and at rest; the reviewer is isolated from human access.
Self-hosted (Enterprise)
Deploy inside your own VPC so source never leaves your perimeter — for ITAR / HIPAA / finance.
Never trains on you
Proprietary code is not fed back into CodeRabbit's models under any plan.
Integrations & Ecosystem
Git platforms
Install the GitHub App; CodeRabbit reviews every PR automatically — no CI changes, no YAML for basic use.
GitHub App The same automated MR reviews on GitLab, including self-managed instances — one config across platforms.
GitLab App The only AI reviewer here that also covers Azure DevOps repos out of the box.
Azure DevOps PR reviews on Bitbucket Cloud — CodeRabbit is the only tool spanning all four major platforms.
Bitbucket Issue trackers
Link tickets and auto-create issues from review threads; linked-ticket context improves suggestions.
UI → Integrations Chat
Review notifications plus a Slack agent ($0.50/agent-min) to act on reviews from chat.
UI → Integrations Context & MCP
Bring live context (Postgres, logs, docs) via MCP so reviews reason over systems, not just the diff.
add MCP server CodeRabbit fetches the latest API docs on the web for up-to-date guidance inside a review.
built in Editor & CLI
Free IDE extension (May 2025) reviews staged changes before the PR; CLI for pre-commit checks.
Marketplace / npm Pricing
Unlimited public and private repositories, AI PR summaries, inline review comments, IDE extension and a 14-day Pro Plus trial. Rate-limited (about 3 back-to-back reviews, then 4 PR reviews/hour per developer). No credit card. The genuinely useful free tier that drove CodeRabbit's open-source adoption.
- Unlimited repos
- PR summaries + diagrams
- IDE review
- No credit card
Unlimited PR reviews, all 40+ linters and SAST scanners, custom plain-English rules, auto-fix, Jira/Linear/Slack integrations and learnable preferences. $30/mo billed monthly. Per developer who creates PRs — not your whole team.
- Unlimited reviews
- 40+ linters + SAST
- Auto-fix
- Jira / Linear / Slack
Adds an AI issue planner, automated merge-conflict resolution, custom pre-merge checks and higher rate limits (10 PR reviews/dev/hour vs Pro's 5). For teams that regularly hit Pro's limits or want issue-level planning from reviews.
- AI issue planner
- Merge-conflict fix
- Pre-merge checks
- Higher limits
Self-hosted deployment inside your VPC, SSO/SAML, custom AI models, multi-organization support, SLA-backed support, compliance and audit logs. Available via AWS and GCP Marketplace. Self-hosting is Enterprise-only — smaller teams needing on-prem are out of luck.
- Self-hosted
- SSO / SAML
- Custom models
- SLA + audit logs
* Pricing per developer who creates PRs — not your whole team. Free tier is rate-limited; Pro is billed annually at $24/dev/mo ($30 monthly). Enterprise is custom, roughly $15k/mo at 500+ seats.
CodeRabbit vs The Field
CodeRabbit vs GitHub Copilot code review
Depth + multi-platform vs zero-cost GitHubCopilot's PR review is bundled into Copilot Business/Enterprise at no extra cost and integrates natively into GitHub. CodeRabbit counters with all four Git platforms (Copilot is GitHub-only), 40+ built-in linters/SAST and plain-English rules, plus a free tier Copilot lacks — and Pro ($24/dev/mo) undercuts Copilot Enterprise ($39). Pick Copilot for frictionless GitHub-only review; pick CodeRabbit for depth, customization or mixed Git estates.
Copilot for zero-cost · CodeRabbit for depth + platformsCodeRabbit vs Greptile
Precision + speed vs highest bug recallGreptile indexes the whole repo (not just the diff), catching more total bugs — independent benchmarks ~82% recall vs CodeRabbit's ~44% — and wins on cross-file and monorepo bugs. CodeRabbit replies fastest (~45s to first comment), is far less noisy, covers more platforms and has a much larger install base. Tolerate a chatty bot and want max recall? Greptile. Want a quiet, ergonomic default reviewer? CodeRabbit.
Greptile for recall · CodeRabbit for ergonomics + reachCodeRabbit vs Qodo Merge (PR-Agent)
Hosted breadth vs free self-hostQodo's open-source PR-Agent can be fully self-hosted at no Enterprise gate — the key win for security-conscious teams. CodeRabbit's hosted Pro is cheaper ($24 vs $30/dev/mo), supports more Git platforms (incl. Azure DevOps and Bitbucket), ships built-in linting and has a far bigger user base. Choose Qodo if you must self-host without Enterprise pricing; choose CodeRabbit for the broader, more battle-tested hosted engine.
Qodo for free self-host · CodeRabbit for platform breadthCodeRabbit vs Cursor BugBot
Standalone reviewer vs Cursor-only add-onBugBot runs automatically on PRs inside the Cursor ecosystem and is precise, but it is an add-on on top of a Cursor subscription ($40/dev/mo on top of Cursor Pro) and locked to that editor. CodeRabbit is editor-agnostic, works across all four Git platforms, and its free tier covers open source with no other subscription. Choose BugBot only if Cursor is already your whole stack; otherwise CodeRabbit avoids the lock-in.
Cursor-only: BugBot · Multi-tool: CodeRabbitWho CodeRabbit Is Best For
Catch bugs before they reach a human
CodeRabbit reviews every PR automatically and flags real defects — off-by-ones, edge cases, security slips — that developers miss under time pressure. Independent tests show it catches ~80% of security issues and the hard-to-spot logic bugs, shifting review left without waiting for a senior.
Kill the review backlog
A 15,000-line PR no longer sits for two days. The summary + diagram let a reviewer grasp scope in seconds, and the bot handles the boring checks (missing tests, unhandled paths, inconsistent logging). Teams report 50%+ less manual review effort and up to 80% faster review cycles.
Security & vulnerability scanning
The 40+ SAST scanners cover SQL injection, XSS, insecure deserialization and hardcoded secrets, filtered for false positives. Security findings land inline in the PR with one-click fixes — a first pass before Snyk or Checkmarx.
PR summaries for busy reviewers
For leads who review 30-file PRs between meetings, the TL;DR + walkthrough + sequence diagram is the headline value: context arrives ready-made, so the human reviews the decision, not the diff line by line.
Onboard new developers
Consistent, explain-why feedback on every PR teaches juniors the team's conventions faster than sporadic human review. The chat lets them ask "why" on any comment instead of guessing.
Enforce standards across a monorepo
Plain-English rules in .coderabbit.yaml enforce patterns repo-wide — no console.log in prod, always error boundaries, rate limits from config. The bot becomes the consistent reviewer that never has an off day, while humans focus on architecture.
Getting Started
Install the app
Go to the CodeRabbit site and install the GitHub App (or the GitLab / Azure DevOps / Bitbucket equivalent). One click authorizes the repos you want reviewed — no build config, no CI changes, no YAML for basic use.
Authorize repositories
Pick the repos CodeRabbit should watch. From that moment every new or updated pull request is reviewed automatically. You can scope it to specific repos or orgs and adjust access anytime from the dashboard.
Tune the rules (optional but worth it)
Add a .coderabbit.yaml at repo root in plain English — e.g. "never use console.log in production". Most teams spend 1-2 weeks calibrating to cut noise; the config is a living document. "Source lines" shows which rule or scanner triggered each comment.
Open a PR and watch it review
Open or update a pull request. CodeRabbit fetches the diff, runs LLMs + scanners + codegraph, and posts a summary, diagram and line-by-line comments — usually within a few minutes, first comment in ~45s. Critical issues can be set to block merge.
Chat, fix, and extend
Reply with @coderabbitai to ask follow-ups or request a fix; on Pro use "Fix with AI" to commit suggested changes. Add Jira/Linear/Slack for tracking, MCP servers for live context, and the free VS Code / Cursor extension to review before the PR.
FAQ
Is CodeRabbit free?
Yes. CodeRabbit has a free tier that lasts forever: unlimited public and private repositories, AI-powered PR summaries, inline review comments and the free IDE extension, with no credit card required. The free tier is rate-limited (about 3 back-to-back reviews, then 4 PR reviews per hour per developer), so most small teams live on it comfortably, while busy teams upgrade to Pro at $24/dev/month billed annually.
What is CodeRabbit and how does it work?
CodeRabbit is an AI code review tool that reviews your pull requests automatically — it is not a coding agent that writes your app. You install the CodeRabbit GitHub (or GitLab / Azure DevOps / Bitbucket) app, and on every new or updated PR it fetches the diff, analyzes the change with LLMs plus 40+ linters and SAST scanners and a codegraph of cross-file dependencies, then posts a natural-language summary, architectural diagram and line-by-line comments. You can reply with @coderabbitai to ask follow-ups or request a fix.
Is CodeRabbit safe and secure?
Yes — security is a core selling point. CodeRabbit is SOC 2 Type II and ISO 27001 certified, encrypts your code in transit and at rest, enforces a zero-data-retention policy (your code is analyzed and then immediately deleted, never used to train its models), and keeps the reviewer isolated from human access. Enterprise adds self-hosted deployment so code never leaves your VPC.
CodeRabbit vs GitHub Copilot code review — which is better?
If you already pay for Copilot Business/Enterprise, its PR review is included at zero extra cost and integrates natively into GitHub. CodeRabbit wins on three fronts: it supports all four major Git platforms (GitHub, GitLab, Bitbucket, Azure DevOps) rather than GitHub-only; it adds 40+ built-in linters and SAST plus customizable plain-English rules; and Pro ($24/dev/mo) is cheaper than Copilot Enterprise ($39/dev/mo) with a genuinely useful free tier Copilot lacks. Choose Copilot for zero-friction GitHub-only review; choose CodeRabbit when you need depth, customization or multi-platform coverage.
CodeRabbit vs Greptile — which catches more bugs?
Greptile indexes your entire repository (not just the diff), so it catches more total bugs — independent benchmarks put it around 82% recall versus CodeRabbit's ~44% — and it is the stronger pick for monorepos and cross-service dependencies. CodeRabbit trades some recall for much lower noise, the fastest time-to-first-comment (~45s), broader platform support and a far larger install base. If your team can tolerate a noisier bot, Greptile catches more; if you want a quiet, ergonomic default reviewer, CodeRabbit.
Does CodeRabbit support GitLab, Bitbucket and Azure DevOps?
Yes. CodeRabbit is the only major AI code review tool that covers all four large Git platforms — GitHub, GitLab, Azure DevOps and Bitbucket. That matters for orgs that run GitLab for backend and GitHub for open source, or that cannot standardize on one provider: one reviewer across the whole Git estate.
Can CodeRabbit auto-fix or auto-merge pull requests?
CodeRabbit can propose fixes: Pro adds a "Fix with AI" / one-click auto-fix that spawns its own coding agent to write the change and commit it to the branch. It is advisory by default — it will not auto-merge, and merge gating is configurable (block on critical issues or run in comment-only mode). Auto-merge is intentionally left to your CI policy.
Does CodeRabbit work with Cursor or VS Code?
Yes. A free IDE extension (launched May 2025) brings the same review to VS Code and its forks Cursor and Windsurf, giving inline comments on staged and unstaged changes before you even open a PR. There is also a CLI for pre-commit reviews. The IDE review is free for all users and complements the PR-time review.
Is CodeRabbit worth it for a team?
For most teams, yes. A senior developer spends 4-8 hours a week on review; even a conservative 10% reduction returns far more than the $24/dev/mo Pro cost (real-world ROI estimates land around 8x for a 25-dev team). Start on the free tier, run it across your repos for a few weeks, then upgrade to Pro once rate limits or missing features (linters, Jira/Linear, auto-fix) start costing more than the subscription.
What languages does CodeRabbit support, and how do I reduce noise?
CodeRabbit supports all major programming languages (Python, JavaScript/TypeScript, Java, Go, Rust, C++, Ruby and more); review depth varies with how much public training data a language has. Out of the box it can be verbose on large PRs, so most teams spend 1-2 weeks tuning a .coderabbit.yaml config (written in plain English — e.g. "never use console.log in production") to filter false positives. Because it is precision-tuned, expect fewer but higher-signal comments than raw-LLM reviewers.
Off-by-one: `if (count > limit)` rejects the limit-th request. With limit = 100 it blocks the 100th call — should be `count >= limit` to allow exactly 100.