Greptile
: How to use it, features, and the business problems it solves
Add bookmark
What is Greptile?
An AI code-review tool where AI agents automatically review GitHub/GitLab pull requests with full-codebase context. It catches multi-file bugs, anti-patterns, and security risks, and can generate tests and hand off fixes to coding agents.
Business problems it solves
About "Greptile"
What is Greptile
Greptile is an AI code-review tool that automatically reviews GitHub/GitLab pull requests (PRs) with full context of the codebase. Under the banner "The AI Code Reviewer," multiple AI agents review changes while referencing a graph index of the entire codebase, considering how a change affects other files. It came out of Y Combinator (Winter 2024) and has raised a Series A led by Benchmark.
At its core, Greptile understands the whole codebase — not just the diff — and flags bugs, anti-patterns, and security risks. You can write custom rules in plain English, and it continuously learns your team's conventions from PR comments. Findings can be handed off to coding agents via "Fix in Cursor / Codex / Claude Code / Devin."
Greptile runs primarily on Claude Opus 4.5 (per Anthropic's official case study). It also uses "Model Inversion" — detecting which agent wrote the PR and reviewing it with a different model (e.g., code written by Claude is reviewed by GPT). It also includes "TREX," which automatically generates and runs tests.
How to use
Connect your repository, and it reviews subsequent PRs automatically.
Connect
Connect Greptile to your GitHub/GitLab repository.
Index the codebase
Build a graph index of files, functions, and dependencies.
Auto-review PRs
Flag bugs and risks per PR. TREX also generates and runs tests.
Fix & learn
Hand off to an agent to fix; learn conventions from comments.
The free Starter plan is 1 developer and 50 credits/month (unlimited repos). 1 credit = 1 standard review; a TREX (test) review is 3 credits.
Key features
01Full-codebase context review
Builds a graph index of files, functions, and dependencies and reviews changes with awareness of their impact on other files. Multiple agents run in parallel and detect style violations, security risks, and logical bugs spanning multiple files.
02Rules, learning, and tests (TREX)
Set custom rules in plain language and continuously learn your team's conventions from PR comments. TREX auto-generates and runs tests in a sandbox. Findings can be handed off to agents via "Fix in Cursor/Codex/Claude Code/Devin."
03Integrations and security
Supports GitHub, GitLab, and GitHub Enterprise Server, and integrates with Slack, Jira, and Linear (including verifying PRs against a ticket's acceptance criteria). It offers API and MCP, and Enterprise supports self-hosting, SSO/SAML, and audit logs.
Pricing
You can start for free; paid plans are per seat (developer). The figures below are monthly, per person.
| Plan | Price | For | Credits | Main content |
|---|---|---|---|---|
| Starter | Free | 1 developer | 50/mo | Unlimited repos |
| Pro | $30/person/mo | Unlimited users | 50/person/mo | 14-day free trial; $1 per extra credit |
| Enterprise | By inquiry | — | Custom | Self-hosting, SSO/SAML, GHES |
1 credit = 1 standard review; a TREX (test) review is 3 credits. On Pro, extra credits are $1 each. OSS projects (MIT/Apache/GPL, etc.) are free, and there are discounts for pre-Series-A startups (check the official site for eligibility). Prices are in USD and subject to change; check the official site for the latest (as of August 2026).
How it differs from other AI code reviews
Greptile stands out by understanding the whole codebase as a graph, flagging bugs that span multiple files, and even handling test generation and handoff of fixes to agents. Its depth differs from lightweight, diff-centric reviews.
| Aspect | Greptile | CodeRabbit | Traditional human review |
|---|---|---|---|
| Focus | PR review with whole-codebase understanding | AI PR review | Human review |
| Strength | Cross-file, auto-test generation, learning | Summaries, line comments, chat | Understanding context/intent |
| Models | Claude Opus + cross-review | Various LLMs | — |
CodeRabbit, which also reviews PRs with AI, and traditional human review make good points of comparison. If you want deep reviews informed by whole-codebase context, plus automation through fixes and tests, Greptile is a strong option.
The information on this page is based on the official site as of August 2026. Please check the official site for the latest specifications and pricing.
![[2026 Edition] 20 AI Tools Transforming Developer Workflows | Coding Assistance, Automated Code Review, No-Code Web Development, and Workflow Automation](/_next/image?url=%2Fimages%2Farticles%2Fdeveloper-ai-programming-tools.png&w=3840&q=75 "[2026 Edition] 20 AI Tools Transforming Developer Workflows | Coding Assistance, Automated Code Review, No-Code Web Development, and Workflow Automation")