CodeRabbit
AI code-review bot that posts line-by-line PR feedback, summaries, and fixes on GitHub, GitLab, Azure DevOps, and Bitbucket, plus a free IDE and CLI reviewer
FREEMIUM Verified JUN 23, 2026
Graphite
AI code review platform with stacked pull requests and a merge queue for GitHub, powered by the Graphite Agent (formerly Diamond) reviewer
Graphite is an AI code review platform built around stacked pull requests and a stack-aware merge queue for GitHub. Its Graphite Agent reviewer (formerly Diamond) flags bugs and security issues pre-merge across 500,000-plus PRs reviewed. The Hobby tier is free; Starter runs $20 and Team $40 per user monthly, billed annually. Best for teams shipping many small PRs.
Verified JUL 12, 2026 FREEMIUM Live
What is Graphite?
Graphite is an AI code review platform for GitHub teams, built around three ideas: stacked pull requests, a stack-aware merge queue, and an AI reviewer called the Graphite Agent (originally launched as “Diamond”). Instead of pushing one large diff and waiting, developers break a change into a stack of small, dependent PRs that reviewers can approve independently while work continues up the chain. The Graphite Agent then reviews each PR pre-merge, reasoning over the whole codebase rather than just the diff to flag bugs, logic errors, security vulnerabilities, and style issues. Graphite reports more than 500,000 PRs reviewed at a sub-5% negative-comment rate.
Beyond review, Graphite adds a stack-aware merge queue that lands PRs in the correct order and keeps branches green, a Graphite Chat surface for resolving CI failures and committing suggested fixes in one conversation, and dev insights for tracking team throughput. It works through a web dashboard, a CLI, a VS Code extension, and an MCP server, syncing deeply with existing GitHub repositories rather than replacing them. The company raised a $52M Series B and cites customers shipping roughly 3x faster and saving about seven hours per week on review.
Who is it for?
Graphite is aimed at engineering teams that ship a high volume of small, frequent changes and feel the pain of review bottlenecks and flaky merge order. The free Hobby tier is fine for a solo developer trying the stacking workflow on personal repos, but the AI review and collaboration value shows up on organization repos, which start at the Starter plan and open up fully on Team.
- Fast-moving product teams that want small, reviewable PRs and a merge queue instead of long-lived feature branches and manual rebasing.
- Platform and DevEx engineers standardizing review workflow, CI optimization, and metrics across many repositories.
- GitHub-native startups that want AI pre-merge review without migrating off GitHub or adopting a separate review tool like coderabbit or greptile.
- Developers who already stack commits by hand and want tooling that manages the stack, dependencies, and merge order automatically.
How much does Graphite cost?
Starting price: $20/user/mo · Free tier: yes · Model: freemium
Pricing verified JUL 12, 2026
Price history tracked from June 2026
| Plan | Price | Includes |
|---|---|---|
| Hobby | Free | Personal-account repos only · CLI for stacked pull requests · MCP server and VS Code extension · In-app inbox and notifications · Limited Graphite Chat and AI reviews |
| Starter | $20/user/mo | Everything in Hobby plus GitHub Organization repos · Slack notifications · Team insights and dev metrics · Billed annually (20% off monthly) |
| Team | $40/user/mo | Unlimited Graphite Chat · Unlimited AI reviews via Graphite Agent · AI review customizations and rules · Automations and basic merge queue · Billed annually (20% off monthly) |
| Enterprise | Custom | Advanced merge queue settings and custom analytics · ACLs, SAML/SSO, and SIEM audit logs · GitHub Enterprise Server (GHES) support · Premium support with SLAs and custom MSA · Private uploads and dedicated payment terms |
What are Graphite's key features?
- Graphite Agent (formerly Diamond) AI reviewer that reasons over the whole codebase, not just the diff
- Stacked pull requests to split work into small, dependent, reviewable units
- Stack-aware merge queue that lands PRs in order and keeps branches passing
- Graphite Chat for resolving CI failures and committing AI-suggested fixes in one thread
- CLI plus VS Code extension for managing stacks locally
- MCP server so AI agents can drive Graphite workflows
- Modern PR page and unified review inbox with Slack notifications
- Customizable AI review rules and automations (Team plan and above)
What people use Graphite for
- 01 Breaking a large change into a stack of small, sequenced PRs so reviewers are never blocked on one giant diff
- 02 Getting instant pre-merge AI review that flags bugs, logic errors, and security issues before a human looks
- 03 Landing PRs safely in order with a stack-aware merge queue that keeps branches green
- 04 Resolving CI failures and applying suggested fixes inside a single Graphite Chat conversation
- 05 Tracking team review throughput and cycle time with built-in dev insights
Pros and cons
| Pros | Cons |
|---|---|
| Stacked PRs are a genuine workflow advantage for teams that ship many small, dependent changes | GitHub-only — no GitLab or Bitbucket support, so non-GitHub teams are excluded |
| Free Hobby tier covers personal repos, the CLI, and the VS Code extension with no card required | AI review depth on raw reasoning trails a frontier model like Claude used directly; Graphite's edge is workflow integration, not the model itself |
| Graphite Agent reviews the full codebase context and reports a sub-5% negative-comment rate across 500,000-plus PRs | Stacking has a real learning curve and changes how a team commits and branches |
| Deep GitHub sync means it augments existing repos rather than forcing a platform migration | Unlimited AI reviews require the Team plan at $40/user/month; the free and Starter tiers cap AI usage |
What are the best Graphite alternatives?
Greptile
AI code-review bot that reviews GitHub and GitLab pull requests with full-codebase context, catching multi-file bugs before humans do
FREEMIUM Verified JUL 8, 2026
Qodo
AI code-review and governance platform that automates pull-request review and enforces standards
PAID Verified JUL 1, 2026
GitHub Copilot
AI coding assistant with inline completions, chat, and autonomous agent mode across major IDEs
FREEMIUM Verified JUL 3, 2026
Cursor
AI-native code editor that runs autonomous agents to build, test, and review code
FREEMIUM Verified JUL 3, 2026
How people make money with Graphite
- Offer stacked-PR and merge-queue onboarding as a consulting service for engineering teams migrating off plain GitHub; the per-seat Team plan gives a natural upsell path for small dev shops
- Ship faster as an AI-accelerated contractor — Graphite reports customers save roughly seven hours a week on review, so higher PR throughput at the same rate is the pitch
Frequently asked questions
Is Graphite free?
Yes, there is a permanently free Hobby tier for personal-account repositories. It includes the CLI for stacked PRs, the MCP server and VS Code extension, an in-app inbox, and limited Graphite Chat and AI reviews. Organization repos and unlimited AI review require a paid plan.
How much does Graphite cost?
Starter is $20 per user per month and Team is $40 per user per month, both billed annually (roughly 20% off monthly). Enterprise is custom-priced. The Team plan is the one that unlocks unlimited AI reviews and Graphite Chat.
What is the Graphite Agent, and is it the same as Diamond?
Graphite Agent is Graphite's AI code reviewer. It was originally launched in 2025 as a standalone product called Diamond; the Diamond name was later folded into Graphite Agent. It reviews pull requests pre-merge, flagging bugs, security issues, and style problems using full-codebase context.
What are stacked pull requests?
Stacking lets you break one large change into a chain of smaller, dependent PRs that can each be reviewed independently. Because reviewers see small diffs and you keep working up the stack, teams avoid the bottleneck of one giant PR waiting on feedback.
Does Graphite work with GitLab or Bitbucket?
No. Graphite is built specifically around GitHub, with deep two-way sync. Teams on GitLab or Bitbucket are not supported and would need a different tool such as CodeRabbit or Greptile.
Does Graphite replace human code review?
No. Graphite positions its AI reviewer as pre-merge assistance that catches issues before a human looks, not a replacement for human sign-off. It speeds review — customers report saving around seven hours a week — but final approval stays with your team.
What platforms does Graphite run on?
Graphite offers a web dashboard for the PR page and inbox, a command-line tool for managing stacks, a VS Code extension, and an MCP server for AI agents. It integrates directly with GitHub rather than hosting your repositories itself.