AI Code Reviewfreemium

Cubic

Free Starter tier (20 PR reviews/month) plus fully free usage for open-source projects

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What Cubic does

  • 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

Cubic — straight answers

What is Cubic?

Cubic is listed under AI Code Review, in the Code & Development category on Flocci AI Tools. Free Starter tier (20 PR reviews/month) plus fully free usage for open-source projects. It is freemium — a usable free tier with paid plans above it, and it lives at cubic.dev.

Is Cubic free?

Cubic is freemium: there is a free tier you can work in and paid plans above it. It is one of 391 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.

What can Cubic do?

Cubic does 3 things the catalog singles out: 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.

What is the best free alternative to Cubic?

CodeRabbit is the closest free alternative: it sits in the same AI Code Review sub-category and is free tier + paid plans. Greptile and Qodo also start free. The full list is on the alternatives page.

See the full list →

Cubic alternatives

Compare all alternatives →

CodeRabbit

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  • 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
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Greptile

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  • 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
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Graphite Diamond

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  • 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
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Qodo

AI Code Review
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  • 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
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Cursor

AI IDEs & Editors
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  • AI-first VS Code fork with agent mode
  • Multi-file edits and terminal commands
  • Codebase-wide context and rules
  • Free tier with limited requests
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Google Antigravity

AI IDEs & Editors
freemium
  • Google's agent-first IDE
  • Powered by Gemini 3 models
  • Autonomous multi-step coding
  • Free access tier
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Head-to-head comparisons

Cubic vs CodeRabbitCubic vs GreptileCubic vs Graphite DiamondCubic vs QodoCubic vs CursorCubic vs Google Antigravity