Graphite

Graphite: AI Code Review & Stacked PR Platform

Graphite is AI code review and stacked-PR workflow platform for high-velocity engineering teams. Code review is the single largest source of velocity loss in modern engineering — PRs sit waiting for human review, get rubber-stamped, or get blocked on style nits. Graphite's pitch is Diamond AI reviewer covering style and obvious correctness so humans focus on architecture, plus stacked PRs that let engineers ship the small reviewable chunks human reviewers actually want.

Key Features

• AI code review and stacked-PR workflow platform for high-velocity engineering teams
• Founded in 2020 by Tomas Reimers, Greg Foster, and Merrill Lutsky (ex-Airbnb engineers)
• Approximately $80M+ raised across rounds; Sequoia and Anthropic invested
• Diamond is Graphite's AI code reviewer — comments on PRs with the rigor of a senior engineer
• Stacked PRs let engineers ship in small reviewable chunks instead of one giant PR
• Integrates natively with GitHub; popular with engineering teams that ship many small PRs daily
• Used by Vercel, Snowflake, Shopify, Notion, Asana, and many other modern engineering orgs

Ideal Use Case

Mid-sized to large engineering organizations that ship many small PRs daily and need both faster, higher-quality code review and structured stacked-PR workflows — particularly companies practicing trunk-based development.

Why Use Graphite

Code review is the single largest source of velocity loss in modern engineering — PRs sit waiting for human review, get rubber-stamped, or get blocked on style nits. Graphite's pitch is Diamond AI reviewer covering style and obvious correctness so humans focus on architecture, plus stacked PRs that let engineers ship the small reviewable chunks human reviewers actually want.

FAQ

Q: Who founded Graphite? A: Tomas Reimers, Greg Foster, and Merrill Lutsky — all former Airbnb engineers — co-founded Graphite in 2020.

Q: How much has Graphite raised? A: Approximately $80M+ across rounds, with Sequoia Capital and Anthropic participating.

Q: What is Diamond? A: Diamond is Graphite's AI code reviewer — it comments on pull requests with the rigor of a senior engineer, catching bugs, style issues, and architectural concerns.

Q: Graphite vs CodeRabbit vs Greptile? A: All three are AI code review tools. Graphite's differentiation is the combination of Diamond AI reviewer plus stacked PR workflow — the two together change how engineering teams structure work, not just how they review it.

Q: Who uses Graphite? A: Vercel, Snowflake, Shopify, Notion, Asana, and many other modern engineering organizations practicing trunk-based development with high PR velocity.

tl;dr

Graphite is the AI code review and stacked-PR platform for high-velocity engineering teams. Sequoia + Anthropic-backed; ~$80M+ raised. Diamond AI reviewer plus stacked-PR workflow. Used by Vercel, Snowflake, Shopify, Notion, Asana.

Related

Looking for more options? Browse the Developer Tools directory or read our best AI coding tools listicle. Graphite is also tracked on Crunchbase.