# Greptile **Source:** https://geo.sig.ai/brands/greptile **Vertical:** Infrastructure **Subcategory:** Cloud Services **Tier:** Emerging **Website:** greptile.com **Last Updated:** 2026-04-14 ## Summary SF AI code review platform with full codebase context catching 3x more bugs than diff-only tools; YC W24 $29.1M Benchmark Series A at $180M valuation serving PostHog and Raycast competing with GitHub Copilot for PR review automation. ## Company Overview Greptile is a San Francisco-based AI code review platform — backed by Y Combinator (W24) with $29.1 million raised including a $25-30 million Series A at $180 million valuation led by Benchmark in September 2025 and a $4.1 million seed led by Initialized Capital — providing software engineering teams with automated code review that understands the full codebase context (not just the changed lines in the PR), continuously monitoring GitHub repositories to catch bugs, enforce company-specific coding standards, and prevent regressions before merging, reviewing millions of code changes weekly for notable customers including PostHog, Raycast, and Y Combinator's internal engineering team. Greptile's full-codebase context architecture is the platform's key technical differentiator: existing AI code review tools (GitHub Copilot PR review, Sourcery, Code Rabbit) analyze the diff of the pull request in isolation — they see the changed lines and immediately surrounding context but not how the changes interact with distant code dependencies, shared state, or architectural patterns elsewhere in the codebase. Greptile builds a graph-based index of the entire repository (classes, functions, imports, data flow, API contracts) and applies this codebase graph when reviewing each PR — enabling it to catch bugs that require cross-file context ('this change to the payment service will cause a null pointer in the order fulfillment module that imports from it') that diff-only review misses. The v3 release catching 3x more critical bugs than v2 demonstrates the iterative improvement in codebase understanding depth. In 2025, Greptile competes in the AI code review and automated software quality market with Codeium (AI coding assistant, $150M raised at $1.25B valuation), GitHub Copilot Code Review (NASDAQ: MSFT, Copilot expanding from code completion to PR review), and Code Rabbit (AI code review, $16M raised) for engineering team code review automation. Benchmark's Series A lead reflects the top-tier firm's conviction in the AI developer tools category where GitHub Copilot validated the market and Greptile represents the code-quality layer above code generation. The code review bottleneck is one of the most universal engineering team scaling challenges — as teams grow, PR review becomes the constraint on engineering velocity, and AI review that catches real bugs (rather than style suggestions) provides genuine throughput value. Y Combinator W24 backing positions Greptile in the AI developer tools category. The 2025 strategy focuses on growing the enterprise GitHub Enterprise accounts, building the custom rule engine for team-specific coding standards enforcement, and expanding the codebase integration to GitLab and Bitbucket. ## Frequently Asked Questions ### What is Greptile? Greptile is an AI code review company founded in 2023 that builds AI agents with complete codebase context. The company participated in Y Combinator's Winter 2024 cohort and is based in San Francisco, CA. ### What products and services does Greptile offer? Greptile offers an AI code review agent that constantly analyzes GitHub repositories, checks for updates, and ensures code works while enforcing company standards and organizational rules. The company recently released Greptile v3, a complete rewrite of their core agent architecture, and introduced an MCP Server that enables integration with Devin, Cursor, and other IDEs. ### Who is Greptile for? Greptile targets software development teams and is used by notable companies including PostHog, Raycast, Vouch, Podium, YC's internal software team, and other top YC companies. ### When was Greptile founded? Greptile was founded in 2023 and participated in Y Combinator's Winter 2024 cohort. ### Where is Greptile located? Greptile is based in San Francisco, California, United States. ### How much funding has Greptile raised? Greptile has raised $29.1M in total funding, including a $4M seed round in June 2024 led by Initialized Capital and a $25-30M Series A in 2025 at a $180M valuation led by Benchmark's Eric Vishria. ### What are Greptile's key achievements? Greptile reviews millions of code changes weekly and serves top YC companies. The latest version, Greptile v3, catches 3x more critical bugs than v2. ### What technology approach does Greptile use? Greptile functions as an AI veteran developer that never sleeps, constantly analyzing GitHub repositories and checking for updates with complete codebase context. It enforces company standards and organizational rules while integrating with development tools through its MCP Server. ### How does Greptile integrate with development tools? Greptile offers an MCP Server that enables integration with Devin, Cursor, and other IDEs. It monitors GitHub repositories for constant analysis and code enforcement. ### What's new with Greptile? Greptile recently released v3, a complete rewrite of their core agent architecture that catches 3x more critical bugs than v2. The company also completed a $25-30M Series A funding round in 2025 at a $180M valuation led by Benchmark. ## Tags ai-powered, b2b, developer-tools, infrastructure, platform, cloud-native, saas --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*