Skip to content
PromptToProd

Best AI code review tools (2026)

AI reviewers that comment on your pull requests before you merge, a must when coding agents write most of the code. Compared on pricing, free tier and score.

Editorial picks for this use case. See each tool page for its score breakdown. Last updated 2026-10-25.

#1
C
CodeRabbit
AI code reviews on pull requests
Verified
82
/ 100
 #2
G
Greptile
AI code review agent that reviews pull requests with full codebase context
Verified
79
/ 100
 #3
O
OpenAI Codex open source
OpenAI's coding agent
Verified
86
/ 100
 #4
G
GitHub Copilot
GitHub's AI coding assistant
Verified
80
/ 100
 #5
Q
Qodo
AI code quality and review platform
Verified
68
/ 100
 #6
C
Claude Code Review
Anthropic's multi-agent AI review for GitHub pull requests
Verified
65
/ 100

Side-by-side comparison

ToolScoreFree tierPricingBest for
CodeRabbit82Yes: free for public/open-source reposEssentials $24/user/mo annual ($30 monthly); Team $48/user/mo annual ($60 monthly); Advanced $72/user/mo; Enterprise custom. Extra usage-based reviews $0.25 per reviewed fileAutomatic AI review on every pull request
Greptile79Yes: Starter is free for 1 active developer with 50 credits a month; qualified non-commercial open-source projects can apply for free useStarter free (1 active developer, 50 credits/mo, unlimited repos). Pro: prepaid credits at $1 each, shared across your organization, with unlimited developers and agents and no seat fees (Base review 1 credit, Plus 3, Apex 10). Enterprise custom (self-host, SSO/SAML). 14-day Pro trial; pre-Series A startups get 500 free credits a month for 6 months; free for qualified non-commercial OSSTeams that want deeper, codebase-aware PR reviews and a review loop their coding agents can read and fix
OpenAI Codex86Yes: included with ChatGPT Free/Go plans, with usage limitsIncluded in ChatGPT Plus ($20/mo), Pro ($100, $200 or $500/mo), Business ($20/seat/mo annual or $25 monthly, 2+ seats); or API key billingDelegating parallel coding tasks and PR reviews, especially if you already pay for ChatGPT
GitHub Copilot80Yes: 2,000 completions/mo plus limited chat and agent usagePro $10/mo, Pro+ $39/mo, Max $100/mo (usage via GitHub AI Credits)Teams already on GitHub who want AI in their existing editor
Qodo68No: 14-day trial only (free Developer tier removed mid-2026)Pro Team: shared credits at $0.012/credit, unlimited usersTeams wanting AI review plus test generation
Claude Code Review65No: Team and Enterprise plans only (the lighter /code-review command runs locally in any Claude Code session)Requires a Claude Team or Enterprise plan (Enterprise: $20/seat/mo plus usage at API rates). Reviews have no flat price: billed on token usage through usage credits, separate from plan usage, with an org-wide monthly spend limitTeams on Claude Team or Enterprise with GitHub repos who want deep, verified AI review on every PR

FAQ

What are the best AI code review tools in 2026?
Our top pick is CodeRabbit (score 82/100): AI code reviews on pull requests. Runners-up: Greptile, OpenAI Codex, GitHub Copilot, Qodo, Claude Code Review.
Is CodeRabbit free?
CodeRabbit free tier: Yes: free for public/open-source repos. Paid pricing: Essentials $24/user/mo annual ($30 monthly); Team $48/user/mo annual ($60 monthly); Advanced $72/user/mo; Enterprise custom. Extra usage-based reviews $0.25 per reviewed file.
Is Greptile free?
Greptile free tier: Yes: Starter is free for 1 active developer with 50 credits a month; qualified non-commercial open-source projects can apply for free use. Paid pricing: Starter free (1 active developer, 50 credits/mo, unlimited repos). Pro: prepaid credits at $1 each, shared across your organization, with unlimited developers and agents and no seat fees (Base review 1 credit, Plus 3, Apex 10). Enterprise custom (self-host, SSO/SAML). 14-day Pro trial; pre-Series A startups get 500 free credits a month for 6 months; free for qualified non-commercial OSS.
Is OpenAI Codex free?
OpenAI Codex free tier: Yes: included with ChatGPT Free/Go plans, with usage limits. Paid pricing: Included in ChatGPT Plus ($20/mo), Pro ($100, $200 or $500/mo), Business ($20/seat/mo annual or $25 monthly, 2+ seats); or API key billing.
How are these tools ranked?
Each tool is scored out of 100 on fit, vibe-coder friendliness, output quality, pricing, ecosystem, momentum and code ownership, using desk research of official docs and pricing pages. Affiliate status never affects scores.

Sources

Related guides

See the full category ranking · How we score