My mental model for what is happening is that 99%+ of people who are now paying attention have been onboarded to anything related to AI in <1 year. This is very confusing to the AI dinosaurs (anyone in AI for pre 2026. Or even, gasp, pre 2012).
@karpathy
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LLMs learn from text prediction, no images involved
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Worth emphasizing that this all comes from just reading a ton of text and then predicting text. There are no images involved except the way you arrange the text responses in 2D.
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LLM eval: asking models land or water at coordinates
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Cool eval. Simply ask an LLM “Land or Water?” and give it a latitude and longitude coordinate as text. Ask 16,200 times, plot as image. The models know. From compressing the internet.
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Tips for Understanding Language Model Outputs via Prompting
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We'll be spending a lot more time trying to understand the outputs of language models. A few thoughts, tips & tricks: Writing. Something I've had success with: Ask your LLM to explain something in ASD-STE100, it's a controlled language specification originally developed for
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Claude Fable 5 released with safeguards
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This is a super exciting release – Claude Fable 5 is the same underlying model as Mythos but with added safeguards. The benchmarks are great and it's SOTA on everything by a margin but I'll add that *qualitatively* also, this is a major-version-bump-deserving step change forward
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Researcher joins Anthropic to work on frontier LLM R&D
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Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.
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Technical challenges in deploying H100 clusters for AI development
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I was recording my nanochat video when I realized that “first boot up an 8XH100 from your favorite provider!” would instantly get everyone stuck on step 1 of the video
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FDM1 Scales VPT Idea for Knowledge Work and Computer Use
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VPT (
https://
openai.com/index/vpt/) blew my mind back in 2022 so I was very excited to see SI scale up the idea with FDM1, but for knowledge work / computer use. Excited and looking forward to more! -
LLMs Enable New Horizons Beyond Coding Acceleration
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Fireside chat at Sequoia Ascent 2026 from a ~week ago. Some highlights:
— Andrej Karpathy (@karpathy) 30 avril 2026
The first theme I tried to push on is that LLMs are about a lot more than just speeding up what existed before (e.g. coding). Three examples of new horizons:
1. menugen: an app that can be fully engulfed by… https://t.co/AJFgYC6SoNFireside chat at Sequoia Ascent 2026 from a ~week ago. Some highlights: The first theme I tried to push on is that LLMs are about a lot more than just speeding up what existed before (e.g. coding). Three examples of new horizons: 1. menugen: an app that can be fully engulfed by
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Cozy Coding: Programming Together with Love
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Haha yeah I call it cozy coding 🙂
Usage: “This valentines, cozy code with someone you love”