Greptile: AI That Actually Understands Codebases

Greptile is building AI that understands entire codebases. Each week, Greptile reviews 5–8 million lines of code for customers and surfaces tens of thousands of bugs that would otherwise slip through human review. Fresh off a $25M Series A round, they're on a mission to kill the bug. In an interview with YC Partner Brad Flora, co-founder and CEO Daksh Gupta shares how he and his team discovered that large language models are often better at reading code than writing it, why code review is the most powerful use case for that ability, and how Greptile is helping developers spend less time catching bugs and more time creating software. Learn more about Greptile: https://www.greptile.com Chapters: 00:00 – Intro & What Greptile Does 00:18 – Why Code Review Matters 01:00 – Humans + AI in the Loop 01:40 – 20,000 Bugs Found Every Week 02:10 – Why Now: LLMs and Code 03:20 – From Code Q&A to Bug Detection 04:20 – What Developers Really Think of AI Tools 05:40 – Advice for Founders

Brad FlorahostDaksh Guptaguest

Sep 23, 20256mWatch on YouTube ↗

EPISODE INFO

Released: September 23, 2025
Duration: 6m
Channel: YC Root Access
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

Greptile is building AI that understands entire codebases. Each week, Greptile reviews 5–8 million lines of code for customers and surfaces tens of thousands of bugs that would otherwise slip through human review. Fresh off a $25M Series A round, they're on a mission to kill the bug. In an interview with YC Partner Brad Flora, co-founder and CEO Daksh Gupta shares how he and his team discovered that large language models are often better at reading code than writing it, why code review is the most powerful use case for that ability, and how Greptile is helping developers spend less time catching bugs and more time creating software. Learn more about Greptile: https://www.greptile.com Chapters: 00:00 – Intro & What Greptile Does 00:18 – Why Code Review Matters 01:00 – Humans + AI in the Loop 01:40 – 20,000 Bugs Found Every Week 02:10 – Why Now: LLMs and Code 03:20 – From Code Q&A to Bug Detection 04:20 – What Developers Really Think of AI Tools 05:40 – Advice for Founders

SPEAKERS

Brad Flora
host
Host of YC Root Access and interviewer for the episode.
Daksh Gupta
guest
Founder of Greptile (YC Winter 2024), building AI to understand and review large codebases.

EPISODE SUMMARY

In this episode of YC Root Access, featuring Brad Flora and Daksh Gupta, Greptile: AI That Actually Understands Codebases explores greptile uses AI to review codebases, catching bugs faster Greptile automates large portions of pull request review to save senior engineers time and catch more defects than human-only processes.

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