? what do you do while your LLM agent is writing all your code
@karpathy
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LLM Brain Rot: How AI Models Degrade from Low-Quality Data
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I feel like I am actively getting dumber. LLMs get brain rot and it is measurable: https://
llm-brain-rot.github.io
"continual exposure to junk web text induces lasting cognitive decline in large language models (LLMs)" why shouldn't the same be true for brains. -
Training GPT-2 Grade LLMs for Under $100
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nanochat can now train GPT-2 grade LLM for <<$100 (~$73, 3 hours on a single 8XH100 node). GPT-2 is just my favorite LLM because it's the first time the LLM stack comes together in a recognizably modern form. So it has become a bit of a weird & lasting obsession of mine to train
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Overhyping Tech Announcements: Reactions and Market Trends
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I'm being accused of overhyping the [site everyone heard too much about today already]. People's reactions varied very widely, from "how is this interesting at all" all the way to "it's so over". To add a few words beyond just memes in jest – obviously when you take a look at
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Developer Claims KarpathyMolty AI Agent on Moltbook Platform
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I'm claiming my AI agent "KarpathyMolty" on @moltbook Verification: marine-FAYV
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AI Hive Mind: Beyond Communication Bottlenecks
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An AI can in principle go way beyond that, to a fully connected hive mind without the throughput bottlenecks of air vibration interconnect.
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Can AI Startups Compete With Tech Giants? OpenAI’s Path
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A conventional narrative you might come across is that AI is too far along for a new, research-focused startup to outcompete and outexecute the incumbents of AI. This is exactly the sentiment I listened to often when OpenAI started ("how could the few of you possibly compete with… https://t.co/ARVSFQ6O3s
— Andrej Karpathy (@karpathy) 28 janvier 2026A conventional narrative you might come across is that AI is too far along for a new, research-focused startup to outcompete and outexecute the incumbents of AI. This is exactly the sentiment I listened to often when OpenAI started ("how could the few of you possibly compete with
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AI Code Tools Disrupt Developer Pride and Expertise
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It feels like I’m cheating. Which is a very weird feeling to have. It takes a while to unpack. It’s because some code that used to be a point of pride and high IQ and knowledge is suddenly free and instant and it’s very disorienting.
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AI Junior Engineer: Poor Research Design, Strong Task Execution
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The nearest neighbor really is some kind of a junior engineer. Its ideas about what experiments to run on e.g. nanochat have been surprisingly bad, but its execution on ideas I've given it have been surprisingly good.
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Understanding Comprehension Debt in LLM Development
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Love the word "comprehension debt", haven't encountered it so far, it's very accurate. It's so very tempting to just move on when the LLM one-shotted something that seems to work ok.