cubic is the #1 AI code reviewer on every independent benchmark. Read the report ->

cubic is #1 on every independent benchmark

AI code reviews for complex codebases

cubic finds hard-to-find bugs in
pull requests and your entire codebase.

2 click install

No credit card needed

AI code reviews for complex codebases

cubic finds hard-to-find bugs in
pull requests and your entire codebase.

2 click install

No credit card needed

Used by teams that can't afford bugs

“cubic immediately improved our review process. PRs move faster and quality is up.”

Peer Richelsen

Co-founder, Cal.com

“cubic immediately improved our review process. PRs move faster and quality is up.”

Peer Richelsen

Co-founder, Cal.com

Reviews that know your codebase

Every PR is checked against your whole codebase and your team’s rules.

The world's most accurate AI code reviewer

Get inline feedback on every PR in seconds with the #1 ranked AI code reviewer.

Context beyond the diff

Flags changes that break code elsewhere, even in another repo.

Learns from your senior engineers

Turns their past review comments into rules that run on every PR.

Your standards, in plain English

Write rules the way you’d say them. cubic checks every PR.

Keeps pull requests moving

cubic approves safe PRs and gets the rest ready to merge.

Auto-approve low-risk PRs

Safe changes get approved automatically. Risky ones still go to you.

Merge confidence, 1 to 5

Every PR gets a score for how safe it is to merge.

Your coding agent fixes what cubic finds

Claude Code, Codex and Cursor pick up cubic’s comments and fix them.

The same review before you push

Run cubic in your terminal and fix issues before you open a PR.

Scan your code for bugs while you sleep

Your codebase is full of bugs. cubic runs thousands of agents each night to find and fix them.

Find serious bugs and vulnerabilities in your codebase.

1000s of AI agents continuously scan your codebase to find bugs and security issues.

AI triage: automatically notify issue owners and create tickets. Fix in one-click.

Background agents fix issues in one-click, and resolve tickets when a fix is merged.

Repeat on a schedule or before a big release

Run scans on a schedule to catch new issues.

Review in GitHub, or in cubic

Change github.com to cubic.dev in any PR link to open it in cubic.

Two-way GitHub sync

Comments and reviews show up in both places.

Changes in reading order

Related changes grouped and ordered, not alphabetical.

The change at a glance

See what changed in a diagram before reading code.

Ask about the PR

Ask questions or take a guided tour of the PR.

Your review inbox

Every PR waiting on you, in one place.

Desktop app

For macOS, Windows and Linux.

World-class teams use cubic

See how modern software teams use cubic to ship faster.

cubic gets us to a better review more quickly—nit-picks are gone, you can feel the velocity increase.

Marc Littlemore

Engineering Manager, n8n

cubic immediately improved our review process—PRs move faster and quality is up. Reviews are a big bottleneck, and most AI tools only help you write code.

Peer Richelsen

Co-founder, Cal.com

We use cubic for Better Auth and it’s been so good. We get a lot of PRs and it helps us merge them much faster.

Bereket Engida

Founder, Better Auth

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

The best engineering teams choose cubic to build faster.
Read their stories

World-class teams use cubic

See how modern software teams use cubic to ship faster.

cubic gets us to a better review more quickly—nit-picks are gone, you can feel the velocity increase.

Marc Littlemore

Engineering Manager, n8n

cubic immediately improved our review process—PRs move faster and quality is up. Reviews are a big bottleneck, and most AI tools only help you write code.

Peer Richelsen

Co-founder, Cal.com

We use cubic for Better Auth and it’s been so good. We get a lot of PRs and it helps us merge them much faster.

Bereket Engida

Founder, Better Auth

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

The best engineering teams choose cubic to build faster.
Read their stories

Security and privacy first

AI reviews your code in real time, then wipes everything clean.

Your code remains yours—always

cubic never stores it or trains AI on it.

SOC 2 compliant

Our commitment to maintaining high standards of security.

Pricing that scales with you

Save up to 25% yearly

Team

Core AI reviews

$30per developer / month, billed yearly
Start 7 day trial

Includes

  • 40k reviewed lines per developer
  • 5 custom review agents
  • Ultrareviews and auto approvals
  • PR and CLI reviews
  • 5 private wikis
  • Jira, Linear, and Asana

Pro

Recommended

Every feature

$79per developer / month, billed yearly
Start 7 day trial

Everything in Team, plus

  • 80k reviewed lines per developer
  • 10 custom review agents
  • Faster PR and CLI reviews
  • Fix with coding agents
  • Codebase scans for 3 repos
  • Premium support and shared Slack

Max

Pro with 2.5× the review allowance

$160per developer / month, billed yearly
Start 7 day trial

Everything in Pro, plus

  • 200k reviewed lines per developer
Team40k
Pro80k
Max200k

Reviewed lines per developer each month

StarterFree

20 PR reviews a month to try cubic

Start for free

EnterpriseCustom

SSO/SAML and custom terms

Get in touch
cubic is free for open source teams. Learn moreCompare all plans →

Frequently asked questions

Your question not answered here? Email us.

What counts as a reviewed line?

The added and deleted lines cubic reviews in your PRs. Generated files, vendored code, binaries and ignored files don't count, and incremental reviews only count new changes.

What's the difference between Pro and Max?

Max has every Pro feature and 2.5× the reviewed lines: 200,000 per developer each month instead of 80,000. Choose Max if your team regularly runs past Pro's allowance.

What happens if we go over our lines?

Reviews pause until your next billing period. To keep them running, an admin can turn on flex capacity: extra lines cost $20 per 10,000, charged only when needed, up to a monthly limit you set.

Who needs a seat?

On Team, you choose who gets a seat. On Pro and Max, every developer who opens 15 or more PRs in 30 days needs one, because scans cover the whole repository. Bots don't count.

When does usage reset?

Reviewed-line usage resets with the billing period.

What programming languages do you support?

cubic is language-agnostic and supports all popular programming languages, including JavaScript, TypeScript, Python, Go, Ruby, Java, and C#.

Do you have an open source plan?

Yes, cubic is free for public repositories. Just connect cubic to a public repository to get AI reviews.

Built to make you extraordinarily productive.