Greptile vs Extend
Side-by-side comparison of AI visibility scores, market position, and capabilities
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.
About
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.
San Francisco AI document processing using LLMs for enterprise data extraction from invoices, contracts, and forms; $17M Innovation Endeavors and YC-backed at multi-million ARR serving Brex and Square cash-flow positive.
About
Extend is a San Francisco-based AI document processing platform using large language models to provide accurate data extraction and document understanding for enterprise workflows — turning unstructured documents (invoices, contracts, medical records, financial statements, onboarding forms) into structured data at the accuracy and cost level that manual processing and traditional OCR cannot match at scale. Backed with $17 million raised in combined seed and Series A funding led by Innovation Endeavors with Y Combinator, Homebrew, and angel investors including Adobe's CSO and Vercel's CEO, Extend reached multi-million dollar ARR and cash-flow positive status serving customers including Brex, Square, Checkr, and multiple Fortune 500 companies.
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