Diamond by Graphite
PaidAI code review that catches real bugs, not just typos.
By Tanmay Verma, Founder · Last verified 28 May 2026
4.2k views
Added 7d ago
80/100Safe BetAI code review that catches real bugs, not just typos.
By Tanmay Verma, Founder · Last verified 28 May 2026
Affiliate disclosure: We earn a commission when you use our links. Editorial picks are independent. How we choose.
Diamond stands out among AI code review tools by focusing on real bugs and security flaws rather than style nits. If you want a reviewer that finds actual production issues and integrates seamlessly with GitHub, this is a strong choice. However, it's limited to pull request analysis and doesn't offer broader codebase scanning.
Last verified: May 2026
Diamond by Graphite is a breath of fresh air in the crowded AI code review space. Unlike many tools that generate a firehose of style suggestions and trivial comments, Diamond is designed to catch logic bugs, security vulnerabilities, and performance issues that actually matter. The integration with GitHub is slick: reviews appear directly on your PRs, and fixes can be committed with one click. The custom rules feature is powerful—teams can enforce their own best practices using plain language or templates like OWASP or Airbnb style guides. In our view, Diamond is ideal for teams that ship often and want to reduce the burden on human reviewers without sacrificing code quality. It's especially strong for catching edge cases and accidentally committed credentials, which are easy for humans to miss. The main limitation is scope: Diamond only reviews pull requests. It doesn't continuously scan your codebase for issues or integrate with IDEs or CI pipelines beyond GitHub. Also, while the site claims low false positives, we'd like more transparency on how it handles different languages and frameworks. Compared to alternatives like GitHub Copilot Code Review or CodeRabbit, Diamond seems more opinionated about signal quality. If you're tired of AI reviewers that suggest renaming variables or adding comments, Diamond is worth a try. But if you need a broader static analysis tool, look elsewhere.
Skip Diamond by Graphite if Skip Diamond if you don't use GitHub or aren't willing to adopt Graphite's stacking workflow.
How likely is Diamond by Graphite to still be operational in 12 months? Based on 6 signals including funding, development activity, and platform risk.
Diamond by Graphite is an AI-powered code review tool that integrates directly with GitHub to analyze pull requests in seconds, flagging critical bugs, security issues, performance problems, and more. Aimed at software engineering teams, it provides instant reviews with 1-click fix suggestions. Key features include custom rules (e.g., OWASP security, Airbnb style guide), support for multiple languages (JavaScript, Python, Ruby, Go, TypeScript, etc.), and a low false-positive rate (less than 5% negative comment rate). Teams using Diamond catch more real issues with less noise compared to other AI code reviewers, as evidenced by benchmarks and testimonials. Positioned as a high-signal alternative to generic AI tools that often produce trivial comments.
Tell us what you want to build — we'll match the AI tools that fit your goal, budget & existing stack.
Concrete scenarios for the personas Diamond by Graphite actually fits — and what changes day-one when you adopt it.
After pushing a stack of two PRs, Diamond automatically reviews both in seconds, flags a logic bug in the second PR that depends on the first, and offers a one-click fix—no manual review needed for simple issues.
Outcome: Bug caught before human review, engineer fixes in one click, merge time reduced.
Manager writes a custom rule in plain language: 'All database queries must use parameterized statements.' Diamond enforces it across every PR, flagging any raw SQL concatenation.
Outcome: Security best practices enforced automatically without manual audit.
Developer creates a PR for a new feature. Diamond scans it, catches a potential edge case with empty input, and suggests a fix. Developer commits the suggestion directly.
Outcome: Catches issues that would have been missed without a human reviewer.
AI review capabilities are limited on Hobby and Starter plans (only limited reviews per month). Full unlimited access requires Team plan at $40/user/month. The AI is powered by Claude and may occasionally miss context for very large or complex PRs. Custom rules and filters are only available on Team and Enterprise tiers.
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
For each published Diamond by Graphite tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Hobby
Free
Ideal for
Solo developers and personal projects exploring AI code review with limited monthly reviews.
What this tier adds
Free entry point with limited AI reviews and personal account repos only.
Starter
$20/user/month billed annually
Ideal for
Small teams wanting AI review on all organization repos with Slack notifications and team insights.
What this tier adds
Adds full organization repo support, Slack notifications, and team insights over Hobby.
Team
$40/user/month billed annually
Ideal for
Growing teams needing unlimited AI reviews, custom rules, automations, and merge queue.
What this tier adds
Unlimited AI Reviews and Graphite Chat, plus AI Review customizations and Merge Queue (Basic).
The company stage and team size where Diamond by Graphite's pricing actually pencils out — and where peers do it cheaper.
Diamond's pricing is competitive for teams already using Graphite: Hobby (free) for personal projects, Starter ($20/user/mo) for small teams with limited reviews, Team ($40/user/mo) for unlimited reviews and customization. Compared to CodeRabbit (starts at $12/user/mo for unlimited reviews), Diamond is pricier but includes stack awareness and Graphite's ecosystem. Enterprise is custom. Annual billing gives 20% off.
How long it actually takes to get something useful out of Diamond by Graphite — broken out by persona, not the marketing-page minute.
Connect your GitHub account in under 3 minutes—no config files needed. First AI review appears on your next PR automatically. For teams, inviting members and setting up custom rules adds about 10 minutes.
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
Pricing, brand, ownership, or deprecation changes worth knowing before you commit. Most-recent first.
Used Diamond by Graphite? Help shape our editorial sentiment research.
© 2026 RightAIChoice. All rights reserved.
Built for the AI community.
Partnership with Cursor to integrate AI-powered development workflows.
Last calculated: May 2026
Enterprise
Custom
Ideal for
Large organizations requiring SAML/SSO, audit logs, GHES support, and custom contracts.
What this tier adds
Adds Advanced Merge Queue, SAML/SSO, audit log (SIEM), GHES support, and premium SLAs.
Full product docs from graphite.dev
Durable execution platform for crash-safe AI agents and workflows.
