Quick Answer: Claude Code Review is Anthropic's multi-agent PR reviewer that catches logic errors, security vulnerabilities, and regressions. It costs $15–25 per review, takes about 20 minutes, and is available for Team and Enterprise plans.
Anthropic launched Claude Code Review on March 9, 2026, and it immediately changed the conversation around automated pull request analysis. Instead of running a single model pass over your diff, it dispatches a fleet of specialized agents that examine changes against your full codebase — then verifies its own findings before posting anything.
If your team is already using AI-powered coding tools to write more code faster, the review bottleneck only gets worse. Claude Code Review is built to address exactly that. In this guide, we'll walk through how to set it up, what to expect from your first reviews, and whether the price tag makes sense for your team. For teams looking to go further with AI agent orchestration across their entire workflow, tools like cowork.ink can tie automated reviews into broader team collaboration.
Claude Code Review is currently in research preview for Team and Enterprise plans. Pricing and features may change before general availability.
How Claude Code Review Works
Claude Code Review isn't a single-pass linter. When a PR triggers a review, Anthropic's infrastructure spins up multiple specialized agents that work in parallel. Each agent focuses on a different class of issue — one hunts for logic errors, another checks security vulnerabilities, a third looks for broken edge cases.
After the agents finish, a verification step checks each finding against actual code behavior. This is what sets it apart from tools that just flag anything that looks suspicious. Findings that don't hold up get filtered out, and the rest are deduplicated, ranked by severity, and posted as inline comments on the exact lines where issues were found.
Each finding gets a severity tag:
| Marker | Severity | What It Means |
|---|---|---|
| 🔴 | Normal | A bug that should be fixed before merging |
| 🟡 | Nit | Minor issue, worth fixing but not blocking |
| 🟣 | Pre-existing | Bug in the codebase, not introduced by this PR |
The pre-existing category is especially useful. It surfaces bugs you've been living with, even when they weren't part of the current change. Every finding includes a collapsible reasoning section so you can understand exactly why Claude flagged it.
On large PRs (over 1,000 lines changed), 84% receive findings, averaging 7.5 issues per review. On small PRs under 50 lines, that drops to 31% with an average of 0.5 issues. This pattern makes sense — the bigger the change, the more surface area for bugs.
Step-by-Step Setup Guide
Setting up Claude Code Review takes about five minutes. You need admin access to both your Claude organization and your GitHub organization.
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Open admin settings. Go to claude.ai/admin-settings/claude-code and find the Code Review section.
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Start setup. Click Setup to begin the GitHub App installation flow.
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Install the Claude GitHub App. Follow the prompts to install the app to your GitHub organization. It requests these permissions:
- Contents: read and write
- Issues: read and write
- Pull requests: read and write
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Select repositories. Choose which repos to enable. If a repo doesn't appear, confirm the Claude GitHub App has access to it.
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Set review triggers. For each repository, pick when reviews run:
- Once after PR creation — review runs when a PR is opened or marked ready
- After every push — review runs on every push, auto-resolving threads when you fix flagged issues
- Manual — reviews start only when someone comments
@claude review
Choosing "After every push" multiplies your cost by the number of pushes per PR. For high-traffic repos, start with "Manual" and opt in specific PRs with @claude review.
To verify everything works, open a test PR. If you chose an automatic trigger, a check run named Claude Code Review should appear within a few minutes. For manual mode, comment @claude review on any open PR.
Customizing Reviews with CLAUDE.md and REVIEW.md
Out of the box, Claude Code Review focuses on correctness — bugs that would break production. It doesn't flag formatting preferences, missing tests, or style issues. You can expand what it checks using two files:
CLAUDE.md is for general project instructions that apply to all Claude Code interactions, not just reviews. If you already use this file for context engineering with AI agents, your review agent will respect those same rules. When a PR violates a CLAUDE.md guideline, Claude flags it as a nit-level finding.
REVIEW.md is review-specific guidance. This is where you encode team conventions that matter during review but not during coding sessions:
# Code Review Guidelines
## Always check
- New API endpoints have corresponding integration tests
- Database migrations are backward-compatible
- Error messages don't leak internal details to users
## Style
- Prefer early returns over nested conditionals
- Use structured logging, not f-string interpolation
## Skip
- Generated files under src/gen/
- Formatting-only changes in *.lock files
Both files are additive. Claude reads CLAUDE.md files at every level of your directory hierarchy, so subdirectory rules apply only to files under that path. REVIEW.md goes in the repository root.
Claude Code Review Pricing Breakdown
Claude Code Review bills on token usage, not a flat per-seat fee. Here's what that looks like in practice:
| PR Size | Avg Cost | Avg Time |
|---|---|---|
| Small (< 50 lines) | ~$10 | ~10 min |
| Medium (50-500 lines) | ~$15-20 | ~15-20 min |
| Large (500-1,000+ lines) | ~$20-30 | ~20-30 min |
For a team of 10 engineers opening 5 PRs per day each, that's roughly 50 reviews/day at ~$20 each = $1,000/day or ~$22,000/month. At 100 engineers, the math scales to around $40,000/month.
Set a monthly spend cap at claude.ai/admin-settings/usage. The analytics dashboard at claude.ai/analytics/code-review shows daily PR counts, weekly spend, and per-repo cost breakages.
Code Review usage is billed separately through extra usage and doesn't count against your plan's included allowance.
Claude Code Review vs. Alternatives
How does Claude Code Review stack up against other AI-powered code review tools? Here's a side-by-side comparison:
| Feature | Claude Code Review | CodeRabbit | GitHub Copilot | Greptile |
|---|---|---|---|---|
| Pricing | $15-25/review | $24/mo per dev | Included with Copilot | Custom |
| Review time | ~20 min | ~2 min | ~1-3 min | ~10-15 min |
| Approach | Multi-agent + verification | Single-pass with context | Agentic with tool-calling | Full codebase indexing |
| Bug detection | 84% (large PRs) | High | Varies by model | 82% |
| Platforms | GitHub only | GitHub, GitLab, Bitbucket, Azure DevOps | GitHub only | GitHub |
| Plans required | Team/Enterprise | Free tier available | Copilot subscription | Team/Enterprise |
| Approves PRs | Never | Optional | Optional | Never |
Choose Claude Code Review if: your team prioritizes depth over speed and you're willing to pay more for verified, high-confidence findings. It's particularly strong for large PRs where subtle regressions hide.
Choose CodeRabbit if: you need multi-platform support, predictable billing, and faster turnaround. At $24/month per developer, costs are more predictable than token-based billing.
Choose GitHub Copilot if: you're already in the GitHub ecosystem and want zero-friction reviews built into the PR interface. Best for teams that value speed and simplicity over deep analysis.
First Impressions: What We Noticed
After running Claude Code Review on a few dozen PRs, here's what stood out:
It catches real bugs, not just style issues. Unlike linters that flag naming conventions, Claude found actual logic errors — off-by-one conditions, missing null checks in error paths, and a race condition in a concurrent handler. The verification step means most findings are actionable.
The 20-minute wait is noticeable. When you're used to instant linter feedback, waiting 20 minutes for a review feels slow. The workaround is to set reviews to run automatically so findings are ready by the time you context-switch back.
REVIEW.md is essential. Without it, Claude focuses narrowly on correctness. Adding team-specific rules dramatically improved relevance. We added a rule about checking that new API routes had rate limiting, and it caught two missing endpoints on the first day.
Pre-existing bug detection is a hidden gem. Claude flagged three bugs in our codebase that weren't part of the PR diff but were in adjacent code. This is something no other tool we tested did consistently.
Claude Code Review delivers the deepest automated PR analysis available in 2026. The multi-agent verification approach genuinely catches bugs that single-pass tools miss. The trade-off is cost and speed — this is a premium tool for teams that value thoroughness.
Pros
- Deep multi-agent analysis catches real bugs
- Verification step filters false positives
- Pre-existing bug detection
- REVIEW.md customization is powerful
- Never auto-approves — keeps humans in the loop
Cons
- $15-25 per review adds up fast at scale
- 20-minute average review time
- GitHub only — no GitLab or Bitbucket
- Team/Enterprise plans only
- No free tier or trial
Tips for Getting the Most Out of Claude Code Review
- Start with Manual mode. Don't enable "After every push" on day one. Use
@claude reviewselectively to understand costs before committing to automatic reviews. - Write a REVIEW.md immediately. Even a short one with 5-10 rules dramatically improves relevance. Focus on what matters to your team, not generic best practices.
- Use it for large PRs first. The 84% hit rate on large PRs means you get the most value where human reviewers are most likely to miss things.
- Check the reasoning sections. Every finding has a collapsible explanation. Read them — they often reveal context about your codebase you didn't know.
- Set a spend cap. Token-based pricing can surprise you. Set a monthly limit in admin settings and monitor the analytics dashboard weekly.
- Pair it with AI agent security practices. Claude Code Review checks for security vulnerabilities, but it works best as one layer in a broader security strategy.
Get Started
Claude Code Review is available now as a research preview for Team and Enterprise customers. Set it up in five minutes from your Claude admin settings, write a REVIEW.md to teach it your team's standards, and let the agents do what they do best — catch the bugs that humans skim past.
For teams that want to take AI-powered code review further — integrating it into broader workflows with multi-agent orchestration, shared context, and team-wide visibility — cowork.ink brings your AI agents and human reviewers into the same workspace.