Greptile
The AI code reviewer that knows your whole codebase
Overview
Greptile positions itself as an AI code reviewer that actually understands the codebase it's reviewing, rather than just scanning the diff. It indexes the whole repo, so when it flags a pull request it can point out that a change in one file breaks an assumption in another, which is the kind of bug most static analysis tools miss entirely. It also runs a test-writing layer called TREX that spins up a sandbox and executes tests against the change before giving it a pass.
It's built for engineering teams that want an extra reviewer in the loop on every PR, not a replacement for human review. Pricing is credit-based: standard reviews cost 1 credit, the deeper TREX reviews cost 3, and the $30 per seat plan includes 50 credits a month before you pay for more. Open source projects can get it free, and pre-Series A startups get a discount, which is a fair way to court smaller teams before they scale into full seats.
Key Features
Full-Codebase Context: Reads the entire repo, not just the diff, to catch bugs that span multiple files.
TREX Runtime Validation: Writes and runs tests for every PR inside a sandbox environment.
Swarm Agent Review: Runs parallel agents to assess changes and spot logical bugs across files.
Learns Your Standards: Picks up team coding conventions from past PR comments over time.
Custom Rules: Enforce team-specific patterns written in plain English.
IDE Integration: One-click fixes pushed to Claude Code, Cursor, and other coding agents.
Pricing
Starting price
$30/mo per seat
Starter (Free): $0/month. Unlimited repositories, 50 credits/month, 1 active developer.
Pro: $30/seat/month. Unlimited repositories and users, 50 credits per seat, custom rules, unlimited external app connections, $1 per extra credit.
Enterprise: Custom pricing. Self-hosting, SSO/SAML, GitHub Enterprise support, dedicated Slack support, custom DPA and invoicing.
Disclaimer: pricing may change, confirm on Greptile's own pricing page before buying.
Pros
Genuine Codebase Awareness: Catches cross-file bugs that diff-only review tools miss.
Runs Real Tests: TREX actually executes tests in a sandbox instead of just guessing from static analysis.
Free Tier for Open Source: Qualified OSS projects get it at no cost.
Self-Hosting Option: Enterprise customers can deploy it on their own infrastructure.
Cons
Credit System Adds Complexity: Standard vs TREX reviews consume credits differently, which takes some getting used to on a busy repo.
Overage Costs: Extra credits run $1 each, so a heavy review month can push the bill well past the base $30 seat price.
No Free Tier for Regular Teams: The free Starter plan exists, but at 50 credits a month for 1 active developer it's really only enough to trial the product.
What Makes It Unique
Runs Actual Tests, Not Just Suggestions: The TREX runtime writes and executes tests against every PR in a sandbox, going further than most AI reviewers that only comment on code without running it.
Kay Score
7.7
/ 10
Tool Information
Pricing
$30/mo per seat
Category
Coding & Development
Platform
Web / iOS / Android
Last Updated
