Cubic
An AI code reviewer that comments on pull requests the moment they open, flagging real bugs, ordering large diffs and writing PR summaries. Examines full repo history for context and ships an AI wiki and custom rules. Free for public repos and a free tier of 10 PR reviews/month; Team from about $40/developer/month.
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Our take
Cubic reviews pull requests the moment they open, flagging real bugs and ordering big diffs so humans review faster. The free tier (10 PRs a month, free on public repos) makes it easy to trial, and the auto-generated AI wiki is a useful extra. Like any AI reviewer it can be noisy, so treat it as a first pass, not a gatekeeper.
Best for
Teams that want fast, context-aware first-pass PR review on complex codebases without a heavy setup.
Pros
- Context-aware review seconds after a PR opens
- Free for public repos plus a 10-PR/month free tier
- Generates PR summaries and an AI codebase wiki
- Custom rules and business context from Jira/Linear
Cons
- AI feedback can be noisy on edge cases
- Per-developer pricing adds up for big teams
- Newer entrant; track record still building
How it compares
Versus CodeRabbit or Greptile, Cubic leans on repo-history context and the bundled AI wiki; all three are first-pass reviewers, not replacements for human judgment.
Full review
Cubic plugs into GitHub and reviews every pull request as it opens, using the full repository history to give context-aware feedback rather than generic lint notes. It can summarise a PR, reorder a sprawling diff so the important changes come first, and answer questions about the change in a chat sidebar. Teams can set custom rules and pull business context from Jira or Linear.
As a coding agent it clears the Outcome bar - it reliably surfaces useful review comments and, on higher tiers, can open fix PRs - but evidence is a mix of vendor numbers and independent head-to-heads, so we score it conservatively. For Indian teams the free public-repo tier and 10 free private reviews a month make it a low-risk trial; just keep a human in the loop, because AI reviewers still flag false positives.
Cloudkart Trust Graph
3.4/5- Actual Utility3.7/5
Source: LLM scoring pass — composite-only catalog tools (2026-06)
- Ease of Use4/5
Source: LLM scoring pass — composite-only catalog tools (2026-06)
- Pricing Fairness3.3/5
Source: LLM scoring pass — composite-only catalog tools (2026-06)
- Reliability3/5
Source: LLM scoring pass — composite-only catalog tools (2026-06)
- Differentiation3.2/5
Source: LLM scoring pass — composite-only catalog tools (2026-06)
Scored as of . Each score is versioned and auditable; vendors cannot buy it.
How this score is set
- Editorial rubric
- Primary signal — five dimensions, 3.4/5 average.
- Community reviews
- None yet.
- Pricing verified
- Not yet verified
- Independence
- Score set by our editorial team before any affiliate relationship is considered. No vendor can buy it.
Frequently asked questions
- Is Cubic free, and how much does it cost?
- Cubic has a free tier, with paid plans that unlock advanced features.
- Who is Cubic best for?
- Teams that want fast, context-aware first-pass PR review on complex codebases without a heavy setup.
- How is Cubic rated on Cloudkart.ai?
- Cubic scores 3.4 out of 5 on the Cloudkart.ai rubric, which weighs actual utility, ease of use, pricing fairness, reliability and differentiation. Scores are set editorially and can never be bought.
Community reviews
No community reviews yet. Be the first to share how Cubic works for you.
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