Last updated 08-11-2026
Category:
Reviews:
Join thousands of AI enthusiasts in the World of AI!
Graphite Chat (formerly Diamond)
Graphite Chat is a GitHub code review agent that comments on pull requests, flags logic bugs and security issues, and suggests one-click fixes before code merges. It lives inside Graphite's developer workflow stack, so teams can review, chat about changes, and ship from the same PR inbox they already use for stacked branches.
Where generic AI reviewers often flood PRs with style nits, Graphite Chat leans on filters and custom rules so comments stay high signal. Teams write enforcement rules in plain language or pick templates like OWASP security, Airbnb JavaScript, or PEP Python, and Graphite Chat applies them on every review. Graphite cites an under 5% negative comment rate on feedback from benchmark tests, which is a sharper noise filter than most standalone review bots that comment on every diff hunk.
Engineering teams on GitHub use it to catch security leaks, performance regressions, and accidental debug commits without waiting on human reviewers. Hobby and Starter plans include limited AI Reviews, while the Team plan unlocks unlimited reviews, rule customizations, automations, and a merge queue for groups that want review automation baked into their release path.
Reviews pull requests in seconds through GitHub with 1-click commit suggestions on flagged lines
Custom rules in plain language plus templates for OWASP, Airbnb JS, PEP Python, Google style guides, and a11y
Filters suppress low-value comments such as naming nits or missing dialog onClose handlers
Benchmark materials cite less than 5% negative comment rate on Graphite Chat review feedback
One-click GitHub authorization with no config files; Graphite says setup takes under 3 minutes
Flags logic bugs, security issues, performance problems, edge cases, and accidentally committed code
GitHub-native review comments with one-click suggested fixes inside the PR thread.
Custom rules in plain language plus OWASP, Airbnb, PEP, and accessibility templates.
Filters and benchmarks target low noise, with under 5% negative comment rate cited.
One-click GitHub setup with no config files; Graphite says onboarding takes under 3 minutes.
Unlimited AI Reviews and rule customizations require the Team plan at $40 per seat per month.
Hobby and Starter tiers cap Graphite Chat and AI Reviews usage.
Integrates with GitHub only; GitLab and Bitbucket are not listed as supported platforms.
What is Graphite Chat (formerly Diamond)?
Graphite Chat is Graphite's AI code review agent for GitHub pull requests. It analyzes diffs, leaves review comments, and suggests fixes teams can accept in one click. The product was previously branded as Diamond on diamond.graphite.dev.
How does Graphite Chat connect to GitHub?
Graphite Chat connects through one-click GitHub authorization with no config files required. Reviews appear as GitHub PR comments, and developers can accept suggested code changes directly from the pull request thread inside Graphite.
Does Graphite Chat have a free plan?
Yes. Graphite Chat is available on Graphite's free Hobby plan for personal account repos, with limited Graphite Chat access and limited AI Reviews. Paid Starter and Team plans add organization repos and higher AI limits.
What does the Graphite Team plan include for AI reviews?
Graphite's Team plan costs $40 per seat per month billed annually and includes unlimited Graphite Chat, unlimited AI Reviews, AI review customizations, automations, and a basic merge queue. Starter keeps AI Reviews limited at $20 per seat per month.
Can Graphite Chat enforce custom coding rules?
Yes. Graphite Chat lets teams write custom rules in plain language or choose templates such as OWASP security, Airbnb JavaScript, PEP Python, and accessibility checks. Those rules run on every pull request review automatically.
What issue types does Graphite Chat flag?
Graphite Chat flags logic bugs, security issues, performance problems, potential edge cases, documentation mismatches, code style issues, and accidentally committed code. Example comments include exposed tokens in logs and incorrect port constants in tests.
Is there a trial for Graphite Chat Team features?
Yes. Graphite offers a 30-day Team plan trial where workspaces can invite contributors with unlimited Graphite Chat and unlimited AI Reviews. Teams pick a paid plan afterward from billing settings in the Graphite app.