Greptile

Greptile is an AI code review agent that builds a dependency graph of an entire repository and then runs swarm agents over every pull request to flag logic bugs, security risks and standards violations that span multiple files. It is aimed at engineering teams whose review queue has become the merge bottleneck now that AI coding assistants generate far more pull requests than humans can read carefully.

Greptile is an AI code review agent from Y Combinator W24 company Tabnam Inc., founded in 2023 by Daksh Gupta, Soohoon Choi and Vaishant Kameswaran and based in San Francisco. Unlike diff-scoped reviewers, Greptile first constructs a graph index of the full repository, then dispatches parallel swarm agents against each pull request to evaluate both the change and its downstream impact across files the diff never touches. It posts findings as pull-request comments, roughly a third of them as one-click GitHub suggestion blocks, and can hand issues off to Claude Code, Cursor, Codex or Devin for the fix. Teams encode their own conventions as custom rules written in plain English, and the agent adapts over time by analysing which comments developers act on versus dismiss. A feature called TREX autonomously writes and runs tests in a sandbox so a suspected defect arrives with a reproduction rather than a static assertion. Greptile Agent v4 shipped 5 March 2026 with published A/B results: addressed comments per pull request rose 74% from 0.92 to 1.60 and the comment addressing rate rose 44% from 30% to 43%. The same announcement moved pricing to a base-plus-usage model, which provoked significant public criticism. Greptile raised a $25M Series A led by Benchmark in September 2025 after a $4M round in June 2024, states 22,000+ teams on the platform including Substack, Klaviyo, Retool, NVIDIA, Brex, Scale, PostHog, Zapier and WorkOS, and offers SOC 2, SSO, audit logs and self-hosted air-gapped deployment inside a customer's own AWS account for defense, healthcare and financial services buyers.

Category

Developer Tools

Pricing

Subscription, Usage-based, Freemium

Target Market

CTOs, VP Engineering, Enterprise Developers, Platform Engineering Teams

Deployment

Cloud-first, Self-hosted, API-based

Founded

2023

Headquarters

San Francisco, United States

Team Size

11-50

Customers

22,000+ teams (vendor-stated); named customers include Substack, Klaviyo, Retool, NVIDIA, Brex, Scale, PostHog, Mintlify, Zapier and WorkOS

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  Full-codebase graph index

  Builds a dependency graph of the whole repository so reviews reason about code the diff never touches.

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  Swarm agent pull-request review

  Runs multiple agents in parallel over each pull request to assess the change and its downstream impact.

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  Custom rules in plain English

  Teams write engineering standards as natural-language rules that Greptile then enforces on every subsequent pull request.

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  TREX autonomous testing

  Writes and executes tests inside a sandbox to confirm a suspected bug is real before commenting.

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  Learning from review history

  Analyses which comments developers address or dismiss and adapts to that team's tolerance over time.

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  Coding-agent and IDE handoff

  Routes findings directly into Claude Code, Cursor, Codex and Devin so remediation starts where the developer works.

• ✓
  Self-hosted air-gapped deployment

  Enterprise customers run Greptile inside their own AWS account with SSO, audit logs and SOC 2 controls.

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  Gating AI agent output

  An organisation running Cursor and Claude Code routes every agent-authored pull request through Greptile so a machine reviews machine-written code before a human signs off.

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  Cross-file regression catching

  A payments team edits a shared helper and Greptile flags the unrelated call sites in other modules that the diff silently breaks.

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  Standards enforcement without a review rota

  A platform team encodes logging, error-handling and migration conventions as plain-English rules rather than repeating the same review comments every sprint.

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  Regulated self-hosted review

  A defense or healthcare contractor deploys Greptile into an air-gapped AWS environment so proprietary source code never crosses the network boundary.

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  Bug triage with a reproduction attached

  TREX writes a failing test in a sandbox so the review comment arrives with proof rather than a speculative warning a developer must verify.

Greptile moved to a base-plus-usage model on 5 March 2026 alongside Agent v4: $30 per developer per month includes 50 reviews, then $1 per additional review. A seat is any developer who received a review in that billing period, so cost tracks activity rather than headcount. Greptile said fewer than 10% of active users would exceed the allowance; critics on Hacker News showed that stacked-PR and agent-driven workflows blow through it in days, with one developer projecting $500+ from 571 pull requests in 30 days. Enterprise self-hosting is quote-only. Open-source projects under MIT, Apache or GPL licences get free reviews and pre-Series A startups under $2M revenue get 50% off, though both concessions are documented in footers rather than advertised.

This page was written from 8 sources, 5 on domains other than greptile.com.

1. 1.greptile.com — greptile.comvendor
2. 2.greptile.com — pricingvendor
3. 3.greptile.com — greptile v4vendor
4. 4.ycombinator.com — greptile
5. 5.news.ycombinator.com — item
6. 6.dev.to — best ai code reviewer in 2026 we ran 4 in parallel for 3 wee
7. 7.thesaasnews.com — greptile raises 25 million series a
8. 8.github.com — greptileai