gstack

gstack

"I don't think I've typed like a line of code probably since December, basically, which is an extremely large change." — [Andrej Karpathy](https://fortune.com/2026/03/21/andrej-karpathy-openai-cofounder-ai-agents-coding-state-of-psychosis-openclaw/), No Priors podcast, March 2026

When I heard Karpathy say this, I wanted to find out how. How does one person ship like a team of twenty? Peter Steinberger built [OpenClaw](https://github.com/openclaw/openclaw) — 247K GitHub stars — essentially solo with AI agents. The revolution is here. A single builder with the right tooling can move faster than a traditional team.

I'm [Garry Tan](https://x.com/garrytan), President & CEO of [Y Combinator](https://www.ycombinator.com/). I've worked with thousands of startups — Coinbase, Instacart, Rippling — when they were one or two people in a garage. Before YC, I was one of the first eng/PM/designers at Palantir, cofounded Posterous (sold to Twitter), and built Bookface, YC's internal social network.

**gstack is my answer.** I've been building products for twenty years, and right now I'm shipping more code than I ever have. In the last 60 days: **600,000+ lines of production code** (35% tests), **10,000-20,000 lines per day**, part-time, while running YC full-time. Here's my last `/retro` across 3 projects: **140,751 lines added, 362 commits, ~115k net LOC** in one week.

**2026 — 1,237 contributions and counting:**

**2013 — when I built Bookface at YC (772 contributions):**

Same person. Different era. The difference is the tooling.

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