Graphite
Code review platform with an AI reviewer (Diamond) and an editing agent
Last reviewed 2026-06-19
Graphite is a code review and collaboration platform built around stacked pull requests and a merge queue, with an AI layer originally called Diamond. Diamond reviews every PR with whole-repo context, flagging bugs, logic errors, style issues, and security vulnerabilities, and the company advertises a sub-3% false-positive rate and custom rules written in plain language. Graphite has since unified Diamond and chat into 'Graphite Agent', which can review, edit, and help merge PRs directly in the pull request interface rather than only leaving comments. Graphite sits between a pure reviewer and an agent: it auto-comments like a reviewer, but the agent can make edits and assist with merging, so consequential actions still pass through a human in the PR flow. The company raised a $52M Series B alongside the Diamond launch; that figure is from its own announcement.
What it can do
Review every PR with repo context (Diamond)
CopilotThe AI reviewer flags bugs, logic errors, style issues, and security vulnerabilities with whole-repo context, advertising a sub-3% false-positive rate.
sourceEdit and help merge PRs (Graphite Agent)
SupervisedGraphite Agent unifies the reviewer and chat to review, edit, and help merge PRs directly in the pull request interface; a human stays in the flow.
sourceEnforce custom rules in plain language
CopilotTeams import a style guide or write preferred rules in plain language (or use templates) that are enforced across every PR.
sourceManage stacked PRs and merge queue
AssistantProvides stacked pull requests and a merge queue to coordinate dependent changes and serialize merges; the AI review layers on top.
source
Strengths
- +Combines a low-false-positive AI reviewer with stacked PRs and a merge queue in one workflow
- +Graphite Agent can edit and help merge in the PR, not just comment
- +Custom plain-language rules and team style-guide enforcement
Limitations
- −GitHub-centric; less coverage of GitLab, Bitbucket, and Azure DevOps than some rivals
- −Full value depends on adopting Graphite's stacking workflow
- −Per-user pricing on top of existing Git host
Overview
Graphite is a code review platform built around stacked pull requests and a merge queue, with an AI reviewer (Diamond) and an editing agent. It targets engineering teams that want faster, higher-signal review tied to their merge workflow.
What it does
Diamond reviews every PR with whole-repo context, flagging bugs, logic errors, style issues, and security vulnerabilities, advertising a sub-3% false-positive rate and custom plain-language rules. Graphite Agent unifies the reviewer and chat so it can review, edit, and help merge PRs directly in the pull request interface, with a human in the flow. Underneath, Graphite provides stacked PRs and a merge queue to coordinate dependent changes.
Integrations & setup
Graphite is built primarily around GitHub, with a VS Code extension and Slack notifications. Setup connects the GitHub org and layers Graphite's review and merge workflow on top.
Pricing
Freemium. Free for individuals, with paid Starter ($20/user/month) and Team ($40/user/month, unlimited AI reviews and agent chat) tiers, plus enterprise. Check the pricing page for current numbers.
Best for / not for
Best for teams that adopt stacked PRs and want AI review tied to their merge queue. Less suited to teams on GitLab/Bitbucket or those that don't want to change their PR workflow.
Traction
Graphite raised a reported $52M Series B alongside the Diamond launch; that figure is from its own announcement.
Alternatives
CodeRabbit and Greptile are the closest review competitors; Ellipsis leans more toward opening fix PRs autonomously.
What people are saying
We aggregate real LinkedIn discussion into sentiment for the agents people search most. Graphite isn't tracked yet, want it added? Request tracking.
FAQ
Is Graphite just an AI reviewer?+
It started as a code review and stacked-PR platform; Diamond added AI review, and Graphite Agent now reviews, edits, and helps merge PRs in the pull request interface, with a human in the loop.
Which Git hosts does Graphite support?+
Graphite is built primarily around GitHub for its review, stacking, and merge-queue workflow.
Sources
- Graphite (official site) · accessed 2026-06-19
- Graphite AI Reviews feature · accessed 2026-06-19
- Meet Graphite Agent (Graphite blog) · accessed 2026-06-19
- Graphite raises $52M and launches Diamond (Graphite blog) · accessed 2026-06-19
Last reviewed 2026-06-19