Greptile is an AI code review tool that takes a fundamentally different approach from most competitors. Founded by Georgia Tech graduates and backed by Y Combinator with a $25 million Series A led by Benchmark Capital, Greptile indexes your entire repository to build a deep semantic understanding of your code's architecture, patterns, and dependencies before reviewing any pull request.
The core differentiator is full codebase indexing and code graph construction. When you connect a repository, Greptile creates a semantic map of every function, variable, class, file, and directory, understanding how they are all connected. This index is continuously updated as code changes, ensuring reviews always reflect the current state. The tool uses multi-hop investigation to trace dependencies, check git history, and follow leads across files.
This full-context approach catches issues that diff-only tools are fundamentally blind to, including cross-file dependency breaks, architectural drift, duplicate code, and convention violations. Greptile's own benchmark (July 2025, 50 bugs) reports an 82% catch rate, and Greptile says its v4 release in early 2026 brought a 74% increase in addressed comments per PR and a 68% increase in positive developer replies.
Greptile integrates as a GitHub and GitLab pull request bot that automatically reviews new PRs with detailed findings. It provides PR summaries with sequence diagrams, supports conversational interaction where developers can request fix suggestions by replying with @greptileai, and offers configurable review focus to specify exactly what changes should receive comments.
Teams can write custom rules in plain English or point Greptile to a markdown file with best practices. The platform learns coding standards by reading every engineer's PR comments and tracks reactions to calibrate useful feedback. Pattern repos can be referenced through greptile.json for cross-repository standards.
Enterprise security includes SOC2 Type II compliance and data encryption at rest and in transit. Deployment options include cloud SaaS and self-hosted on-premises in an air-gapped VPC. The platform supports all mainstream programming languages including Python, JavaScript, TypeScript, Go, Java, Ruby, Rust, PHP, C++, and more.
Over 250 companies including Stripe, Amazon, PostHog, and Raycast use Greptile to review millions of code changes weekly. Additional integrations include Jira, Notion, Google Drive, Sentry, and Slack.
Pricing starts at $30/seat/month for the Pro plan with unlimited repositories and users, 50 included code reviews per seat, and $1 per additional code review. There is no general free tier, but qualified open-source projects and early-stage startups may receive free usage or discounts. Enterprise pricing with self-hosting, SSO/SAML, and dedicated support is available on request.
