Products with extensive/rich UIs lots of sliders, switches, menus, with no scripting support, and built on opaque, custom, binary formats are ngmi in the era of heavy human+AI collaboration. If an LLM can't read the underlying representations and manipulate them and all of the
@karpathy
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Visual Design in Code Editors: Diff View and Verification
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Yes definitely! For coding, functionality like "diff view" in Cursor is a crappy example: green is add, red is delete. It's tapping into your visual cortex to (slightly) decrease verification time. But it's a very low bar of course. I always felt like I really wanted to lay out
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AI-Assisted Coding Workflow: Structuring for Reduced Verification
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Related tweet from earlier where I was describing my own (developing) workflow of "AI Assisted coding" where among other things I try really hard to structure it to decrease verification.
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Generation vs Discrimination: The Verification Gap in Creation
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Good post from @balajis on the "verification gap". You could see it as there being two modes in creation. Borrowing GAN terminology:
1) generation and
2) discrimination.
e.g. painting – you make a brush stroke (1) and then you look for a while to see if you improved the -
LLMs lack memory consolidation like coworkers with anterograde amnesia
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Agree that this is an important capability hole right now (I saw you push back on it a few times in the pod and I also didn't find the answers too satisfying). I like to talk explain it as LLMs are a bit like a coworker with Anterograde amnesia – they don't consolidate or build
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Veo 3 Video Generation: Audio Impact and Bandwidth Considerations
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Very impressed with Veo 3 and all the things people are finding on r/aivideo etc. Makes a big difference qualitatively when you add audio.
— Andrej Karpathy (@karpathy) 2 juin 2025
There are a few macro aspects to video generation that may not be fully appreciated:
1. Video is the highest bandwidth input to brain. Not… https://t.co/zVDM1yyzXUVery impressed with Veo 3 and all the things people are finding on r/aivideo etc. Makes a big difference qualitatively when you add audio. There are a few macro aspects to video generation that may not be fully appreciated: 1. is the highest bandwidth input to brain. Not
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Choosing Between o3 and 4o Based on Task Importance
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Got it! I think I make the decision of whether something is important (and I'm willing to wait) or not that important (and I just want to get a fast sense) and that basically determines if I go to o3 or 4o. It's conceptually easy to just make a binary decision. I'll try it more!
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API pricing clarification for pay-as-you-go models
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ah ok, in API setting where it's more pay-as-you go this makes sense ty for noting!
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Karpathy Endorses Perplexity for Search and Quick Summaries
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I really like Perplexity and use it for anything "search-like", though other LLM providers now include search. It's fast and works great, and is also very useful for quick summaries of whatever trending topics there are. (I'm an investor fyi, but <3 for reals).
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O3 Reasoning Model Superiority for Important Tasks
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An attempt to explain (current) ChatGPT versions. I still run into many, many people who don't know that:
– o3 is the obvious best thing for important/hard things. It is a reasoning model that is much stronger than 4o and if you are using ChatGPT professionally and not using o3