cubic
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By Alex Mercer · Updated

cubic vs GitHub Copilot code review

cubic catches more bugs than Copilot code review, with fewer false positives. Copilot is built into GitHub, so it’s the easy choice if your team already pays for it.

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Benchmark results

Martian’s Code Review Bench is an independent benchmark that tests AI code reviewers on thousands of real open-source pull requests. Results from Aug 26 to Sep 25, 2026. See the leaderboard

cubic catches 0.5% more bugs than GitHub Copilot code review, with 20% fewer false positives.

On critical and high-severity bugs, it catches 4.3% more.

more bugs caughtRecall 59.6% vs 59.3%
0.5%
fewer false positivesPrecision 73.2% vs 66.4%
20%
more accurate overallF1 65.7% vs 62.6%
5.0%
cubicGitHub Copilot code review

All bugs14,406 pull requests

Rank: cubic #1, GitHub Copilot code review #2

Bugs caught
cubic59.6%
GitHub Copilot code review59.3%
Comments that are real bugs
cubic73.2%
GitHub Copilot code review66.4%
Overall accuracy
cubic65.7%
GitHub Copilot code review62.6%

Critical and high-severity bugs9,937 pull requests

Rank: cubic #1, GitHub Copilot code review #4

Bugs caught
cubic60.9%
GitHub Copilot code review58.4%
Comments that are real bugs
cubic72.0%
GitHub Copilot code review67.5%
Overall accuracy
cubic66.0%
GitHub Copilot code review62.7%

cubic vs GitHub Copilot code review at a glance

SetupcubicInstall the cubic GitHub app and choose repositories.GitHub Copilot code reviewBuilt into GitHub on Copilot Pro, Pro+, Business, and Enterprise. On private repositories, reviews use GitHub Actions minutes.
Codebase contextcubicReviews each change against your whole codebase, not just the diff.GitHub Copilot code reviewPulls in related code from the repository as it reviews, and adds CodeQL, ESLint, and PMD findings to its comments.
Your team’s standardscubicLearns from your senior engineers’ past PR comments and from what your team accepts or dismisses. Add your own rules in plain English.GitHub Copilot code reviewFollows custom instruction files such as .github/copilot-instructions.md, and takes thumbs-up and thumbs-down feedback.
FixescubicOne-click fixes for simple issues. “Fix with cubic” hands harder ones to background agents.GitHub Copilot code reviewSuggests patches you can commit. “Fix with Copilot” hands fixes to the Copilot coding agent.
PricingcubicFree for public repositories, with 20 PR reviews a month on the free plan. Paid plans start at $30 per developer a month billed annually, or $40 monthly.GitHub Copilot code reviewGitHub Copilot code review pricing

Used by teams that can’t afford bugs

“I’ve been a dev for 13+ years and I’m still routinely humbled by what cubic catches. We’ve tried other tools but cubic is way better—there’s no comparison.”
Nick Sweeting, Founding engineer, Browser Use

Also used by n8n, Cal.com, Resend, Granola, Legora, Daytona, Tinfoil, and Better Auth. All customer stories

Which is better for your team?

Choose cubic if

  • You want the reviewer that catches the most bugs, with fewer false positives.
  • You want reviews that learn from your senior engineers, with no instruction files to write.
  • You want scheduled scans of your whole codebase.

Choose GitHub Copilot code review if

  • You already pay for Copilot and don’t want another vendor.
  • You want CodeQL results in review comments.

Questions and answers

Is cubic better than GitHub Copilot code review?
Yes. On Martian’s Code Review Bench, an independent benchmark on real open-source pull requests, cubic ranks #1 and GitHub Copilot code review #2. cubic catches 0.5% more bugs with 20% fewer false positives, and also leads on critical and high-severity bugs. You can run both on the same pull requests to see it on your own code.
What is the difference between cubic and GitHub Copilot code review?
cubic catches more bugs than Copilot code review, with fewer false positives. Copilot is built into GitHub, so it’s the easy choice if your team already pays for it.
Do I need a Copilot subscription to use cubic?
No. cubic is a separate GitHub app and works without GitHub Copilot.
How does cubic learn my team’s standards, compared with Copilot instruction files?
cubic learns from your senior engineers’ past PR comments and from the suggestions your team accepts or dismisses, so it needs no instruction files to start. You can also add custom review agents in plain English.
Can I run cubic and Copilot code review on the same repository?
Yes. Both can review the same pull request, so you can compare them on your own code.
How do I switch from Copilot code review to cubic?
Install cubic on the same GitHub repositories and let both review your next few pull requests. Once you’ve seen the difference, turn off Copilot code review.
How much does cubic cost compared with Copilot code review?
Free for public repositories, with 20 PR reviews a month on the free plan. Paid plans start at $30 per developer a month billed annually, or $40 monthly. Copilot code review publishes its current prices on its own pricing page, linked in the table above.
Does cubic store or train on my code?
No. cubic never stores your code or trains AI on it, and it is SOC 2 compliant.
How do I try cubic?
Install the cubic GitHub app and pick your repositories. cubic reviews your next pull request. It’s free for public repositories, and the free plan includes 20 PR reviews a month.

Sources

Checked against each source on Sep 26, 2026.

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