OpenAI cofounder says he hasn’t written a line of code in months: 'Extremely nervous'

Andrej Karpathy helped cofound OpenAI, led Tesla’s Autopilot AI efforts, and has long been one of the most influential educators in deep learning. (Image credit: LinkedIn)

Andrej Karpathy, an OpenAI cofounder and former head of AI at Tesla, has not personally written a single line of code in months—an admission that Karpathy said made him anxious and "extremely nervous".

Speaking on the No Priors podcast, Karpathy said the shift happened around December, when his coding habits flipped almost entirely.  He noticed he was writing just 20 percent of his code with 80 percent delegated to an AI agent -- a reversal of an earlier split when he would do 80 percent of the coding and make the AI agent do the rest.

“I don’t think I’ve typed like a line of code probably since December, basically, which is an extremely large change,” Fortune quoted Karpathy as saying. “I don’t think a normal person actually realises that this happened or how dramatic it was.”

Super effective AI agents reduce human intervention

The cause, Karpathy said, is the sudden effectiveness of agentic AI systems—tools capable of executing multi‑step tasks, writing code, debugging, and coordinating across applications with minimal human intervention. He cited OpenClaw, a fast‑growing agentic framework, as a key example of how software development has moved from writing code line by line to delegating intent and reviewing outcomes.

While the productivity gains are undeniable, Karpathy admitted the transition has left him unsettled. “I’m just like in the state of psychosis of trying to figure out what’s possible, trying to push it to the limit," he said. “I want to be at the forefront of it, and I’m very antsy that I’m not at the forefront of it. I see lots of people on Twitter doing all kinds of things, and they all sound like really good ideas. And I need to be at the forefront or I feel extremely nervous.”

Difficult to keep up with the pace of AI development

That anxiety, Fortune noted, is striking given Karpathy’s résumé. He helped cofound OpenAI, led Tesla’s Autopilot AI efforts, and has long been one of the most influential educators in deep learning. Yet even he says the speed of change has made it difficult to keep up with the frontier.

Karpathy offered a personal example of how far he has leaned into AI agents. In January, he built a system he nicknamed “Dobby the House Elf,” which connects and controls his home’s lighting, security, climate, sound system, and even delivery alerts—all through natural‑language commands sent via WhatsApp.