cubic
AI code review for GitHub pull requests, with a free Starter plan of 20 PR reviews a month and free public repos.
AI Coding AssistantsFreeverified Listed on Free plan
Is cubic free?
Yes, cubic has a free plan. What you get: 20 PR reviews a month; public repos free. Free limits: 20 PR reviews a month (Starter plan). To get it: sign up at cubic.dev/sign-up with GitHub; then install the cubic GitHub App on your repositories; then open a pull request and cubic reviews it. Verified on cubic.dev.
Free plan at a glance
- Includes
- 20 PR reviews a month (Starter plan)
Public repositories are free: connect cubic to a public repo to get AI reviews.
- Duration
- Free forever
- Your content
- The maker says it may be used to train AI
How to get it free
Free account · GitHub- Sign up at cubic.dev/sign-up with GitHub
- Install the cubic GitHub App on your repositories
- Open a pull request and cubic reviews it
Good to know
- Free Starter plan allows 20 PR reviews a month
- Sign-up page mentions a 7-day free trial; pricing page lists the Starter plan as free
cubic.dev, Checked Source
Overview
cubic reviews pull requests on GitHub, flags bugs and checks code against your team's rules. Its free Starter plan includes 20 PR reviews a month, and public repositories are reviewed free.
Free vs paid
| Free | Team | |
|---|---|---|
| Price | $0 | $40/mo |
| Includes |
| Plan details |
Key features
- Comments on bugs and improvements in pull requests
- Custom review agents that enforce your team's coding standards
- Learns from your feedback and improves over time
- Generates PR descriptions from the code changes
- Works in GitHub, with an option to review inside cubic
- Auto-resolves threads when the issue is fixed
Best for
- Tasks
- Review code & PRs
- People
- Teams on GitHub who want AI review on every pull request, Open-source maintainers with public repositories, Engineers who want rules enforced in plain English
Limitations
- Free Starter plan is limited to 20 PR reviews a month
- Paid plans are priced per developer by reviewed lines; going over pauses reviews until the next period unless flex capacity is on
Screenshot
FAQ
- Is cubic free?
- Yes. cubic has a free plan: 20 PR reviews a month; public repos free. We last checked cubic.dev's pricing page on 2026-10-22.
- What does the cubic free plan include?
- The cubic free plan includes: 20 PR reviews a month (Starter plan). Source: https://cubic.dev/pricing-plans (checked 2026-10-22).
- How do I get cubic for free?
- Steps: Sign up at cubic.dev/sign-up with GitHub; Install the cubic GitHub App on your repositories; Open a pull request and cubic reviews it. Sign-up options: GitHub. Start at https://www.cubic.dev/sign-up (checked 2026-10-22).
- What's the catch with cubic's free plan?
- Free Starter plan allows 20 PR reviews a month. Sign-up page mentions a 7-day free trial; pricing page lists the Starter plan as free. Checked 2026-10-22.
- What are free alternatives to cubic?
- GitHub Copilot, CodeRabbit and What The Diff all have free plans. We checked their free offers on 2026-10-25.
- Is the free plan only for open source?
- No. The Starter plan is listed as free for any team; public repositories are free as an extra.Source: cubic.dev/pricing-plans
- What happens if we go over our reviewed lines?
- Reviews pause until the next billing period, unless an admin turns on flex capacity.Source: cubic.dev/pricing-plans
- Is my code used to train models?
- cubic says its AI providers are contractually prevented from using your code to train their models.Source: docs.cubic.dev/ai-review/introduction
Free alternatives
GitHub Copilot
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CodeRabbit
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What The Diff
AI-generated pull request descriptions.
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Aikido Security
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Freebuff
Ad-supported free AI coding agent for the terminal, desktop, web and GitHub repos.
Free forever, Free $0/month plan funded by text ads: free hours refilled daily (30 hours a day shown on the plans page for full access; 5 hours a day in limited mode, 4 on a VPN or proxy)
Sources
- Free offer
- Verified on cubic.dev/pricing-plans
…PR reviews a month to try…
Added by our team. We check that a free option exists and record the date; signing up is between you and cubic, so read their privacy policy and terms first.
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