CodeRabbit
AI Code Review
- Agentic AI reviews on PRs and CLI with automated one-click fix suggestions
- Multi-repo analysis, SAST/linter integration, and MCP connections
- Usage-based Slack review agent priced per agent-minute
Code & Development (5)
All 5 AI code review tools in the Flocci catalog, 4 of them free or freemium. Pricing tier and real capabilities on every entry — no ads, no sponsored placement.
AllAI IDEs & EditorsTerminal & CLI AgentsCode Autocomplete & AssistantsApp Builders & Vibe CodingAutonomous Coding AgentsAI Code ReviewAI Docs & Codebase Q&AAI Testing & QAAI DevOps & SREAI Database & SQL CopilotsVector Databases & RAG InfraAI Game Development
freemium
Greptile
AI Code Review
- Free Starter tier with unlimited repositories for individual developers
- Credit-based review pricing (1 credit = 1 standard review)
- Deep codebase-context reviews (TREX) beyond diff-only analysis
Graphite Diamond
AI Code Review
- AI reviewer built into Graphite's stacked-PR workflow, not a bolt-on bot
- Trained on merge-queue and review-history signal specific to fast-moving teams
- Pairs with Graphite's PR stacking/merge-queue tooling for high-velocity teams
Qodo
AI Code Review
- Context-aware agentic review across IDE, PR, CLI and Git workflows in one platform
- Credit-pooled team pricing instead of rigid per-seat licensing
- Originated as CodiumAI test-generation tool, now spans review + test generation
Cubic
AI Code Review
- Free Starter tier (20 PR reviews/month) plus fully free usage for open-source projects
- Runs thousands of background agents nightly to scan the whole codebase, not just diffs
- Learns team standards from senior devs' past review comments
AI Code Review — straight answers
What are the best free AI code review tools?
Flocci AI Tools lists 5 AI code review tools, ordered free tiers first: CodeRabbit, Cubic, Greptile, Qodo and Graphite Diamond. 4 of the 5 are free or have a free tier. Every entry states what it uniquely does, not a score.
Are there completely free AI code review tools?
None in this sub-category are fully free, but 4 are freemium with a usable free tier. The Completely Free AI Tools collection lists the 115 entries site-wide that carry no paid plan at all.
See the full list →What should I look for in AI code review tools?
Start with what you need to do: get a reviewer on every pull request automatically. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.
See the full list →Looking for a ranked shortlist instead? See the best free AI code review tools.