AI code review tools read a pull request, its diff and (increasingly) the surrounding codebase, then leave review comments, summaries and suggested fixes. They do not replace a human approver, but they catch obvious bugs, missing tests and style drift before a teammate spends time on the PR.
Pricing models differ more than features: per-seat (CodeRabbit, Sourcery, Bito, Graphite), credits or usage (Greptile, Qodo, Cursor Bugbot, Copilot's AI credits), or free and self-hosted (PR-Agent with your own LLM key). Measure noise as well as catches: a reviewer that leaves twenty low-value comments per PR gets ignored quickly.
Tools, licences and pricing checked against vendor and repository pages on November 8, 2026.
1. CodeRabbit
CommercialBest for: Teams that want a dedicated, configurable PR review bot · Essentials $24, Team $48, Advanced $72 per user/month; Enterprise custom
CodeRabbit posts AI review comments, PR summaries and suggested changes on pull requests. Its pricing page lists Essentials at $24, Team at $48 and Advanced at $72 per user per month, with Enterprise by quote and a 20% discount for annual billing.
Strengths
- + Purpose-built for PR review with summaries and walkthroughs
- + Per-developer pricing is predictable
Trade-offs
- − Per-seat cost adds up for large teams
- − Can be chatty until rules are tuned
2. GitHub Copilot code review
CommercialBest for: Teams already paying for GitHub Copilot · Included with paid Copilot plans; usage billed in AI credits
Copilot code review is available on all paid Copilot plans and can be requested on GitHub.com, GitHub CLI, Mobile and major IDEs, with Azure DevOps in preview. It reads repository instructions (.github/copilot-instructions.md, *.instructions.md, AGENTS.md), can run automatically on new PRs, and consumes AI credits (GitHub estimates $0.05 to $1 for a Lite review and $0.25 to $5 for a Balanced one). By default its reviews do not count toward required approvals.
Strengths
- + Native to GitHub with no extra app to install
- + Uses the same instruction files as other agents
Trade-offs
- − Usage-based credit cost per review
- − GitHub-centric; Azure DevOps support still preview
3. Graphite AI Reviews
CommercialBest for: GitHub teams adopting stacked PRs who want review in the same tool · Hobby free; Starter $20, Team $40 per user/month (annual); Enterprise custom
Graphite combines stacked pull requests with AI Reviews (its reviewer is called Diamond on the product page), which flag bugs and security issues and support custom rules written in plain language. Pricing lists Hobby free, Starter $20 and Team $40 per user per month billed annually, and Enterprise custom.
Strengths
- + Review, stacking and merge queue in one product
- + Custom rules in plain language
Trade-offs
- − Built around GitHub; no other Git hosts described
- − Most valuable if you also adopt the stacking workflow
4. Cursor Bugbot
CommercialBest for: Teams already using Cursor that want bug-focused reviews · Usage-based on Cursor plans (average review $1.00 to $1.50 per Cursor)
Bugbot is Cursor's PR reviewer focused on logic bugs with a low false-positive rate; fixes can be applied in the Cursor editor or by a background agent. It is usage-based on Individual and Teams plans with no separate subscription; Cursor says the average review costs $1.00 to $1.50.
Strengths
- + Focus on real bugs rather than style comments
- + Hand-off to Cursor for fixes
Trade-offs
- − Product page names only GitHub
- − Per-review cost varies with PR size
5. Qodo
CommercialBest for: Multi-platform teams that need on-prem or BYO-model options · 14-day trial; Pro Team $0.015/credit pooled; Enterprise custom
Qodo (formerly Qodo Merge for PR review) offers agentic PR review on GitHub, GitLab, Bitbucket and Azure DevOps plus IDE and CLI tooling. Pro Team uses pooled credits at $0.015 per credit after a 14-day free trial; Enterprise (30+ users) adds SSO, audit logs, bring-your-own LLM keys and on-prem deployment. Qodo has no permanent free tier except for qualified open-source projects.
Strengths
- + Supports four major Git platforms
- + On-prem and single-tenant options at Enterprise
Trade-offs
- − No permanent free plan
- − Credit-based pricing needs forecasting
6. PR-Agent
MITBest for: Self-hosted AI review with your own model keys · Free and open source; you pay your LLM provider
PR-Agent is the open-source review agent originally built by Qodo, now donated to and maintained by the community in the The-PR-Agent GitHub organisation. It runs /review, /describe, /improve and /ask on GitHub, GitLab, Bitbucket, Azure DevOps and Gitea, using your own LLM API key.
Strengths
- + Runs in CI or as a webhook on your infrastructure
- + Widest Git platform support in this list
Trade-offs
- − You own setup, upgrades and model costs
- − Community-maintained after the hand-off; check release cadence
7. Greptile
CommercialBest for: Teams that want codebase-aware reviews without per-seat pricing · Starter free (50 credits); Pro $1/credit; Enterprise custom
Greptile reviews PRs with full-codebase context. Pricing is credit-based with no seat fees: Starter is free for one developer with 50 credits a month, Pro is $1 per credit (Base review 1 credit, Plus 3, Apex 10), and Enterprise is custom. It is free for qualified non-commercial OSI-licensed projects.
Strengths
- + No seat fees; credits shared across the org
- + Review depth is selectable per PR
Trade-offs
- − Costs scale with PR volume and depth
- − Deeper reviews cost up to 10 credits each
8. Sourcery
CommercialBest for: Open-source maintainers and small teams on a budget · Free for public repos; Pro $12, Team $24 per developer/month (annual)
Sourcery reviews pull requests on GitHub and GitLab. Public repositories are free forever; Pro is $12 per developer per month billed annually ($15 monthly), Team is $24 ($30 monthly) with security scans, and Enterprise adds self-hosting and SSO.
Strengths
- + Free plan for open-source repositories
- + Lower per-seat price than most rivals
Trade-offs
- − GitHub and GitLab only
- − Security scanning reserved for the Team plan
9. Bito AI Code Review Agent
CommercialBest for: Teams on Bitbucket or GitLab looking for a per-seat reviewer · Team $12-15, Professional $20-25 per seat/month; Enterprise custom
Bito's AI Code Review Agent reviews PRs on GitHub, GitLab and Bitbucket. The pricing page lists Team at $12/$15 and Professional at $20/$25 per seat per month (annual vs monthly) and Enterprise custom.
Strengths
- + Covers GitHub, GitLab and Bitbucket
- + Low entry seat price
Trade-offs
- − Additional Bito products (Governor, AI Architect) are quote-only
- − Smaller community footprint than CodeRabbit or Copilot
