HUMANITY'S LAST EXAM vs. tic tac toe
@karpathy
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Organizing and Sharing Algorithm Controls in a Marketplace
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Would be interesting if you could organize them into groups, turn them on and off as groups, and share them, vote them etc. Would then basically be a lite version similar to controlling and the algorithm in a marketplace that @jack has been thinking about.
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Karpathy praises ChatGPT 4o’s new conversational personality improvements
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Actually I quite like the new ChatGPT 4o personality, whatever they did. – it's a lot more chill / conversational, feels a bit more like talking to a friend and a lot less like to your HR partner
– now has a pinch of sassy, may defend itself e.g. when accused of lying
– a lot of -
Tic Tac Toe Failure Analysis in Recent AI Models
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Great collection! Agree that failure to play tic tac toe is most interesting. Has someone looked at the recent models more thoroughly
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Apps Should Offer Native Export for Prompt Feature
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More apps should natively offer this. “Export for prompt” button
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Prompt Injection Attempts with Invisible Bytes in AI Models
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I'm able to do basic prompt injections with the invisible bytes but I can't get it to work without explicit decoding hints. https://
chatgpt.com/share/67acd3ba
-d234-8007-ad44-ba9d4dfc2920
… The thinking models actually feel a bit more susceptible because they love puzzles and they notice the added bytes and get very -
Unicode Variation Selectors Enable Arbitrary Data Smuggling in Emojis
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UTF-8 I already knew about the "confusables", e.g.: e vs. е. Which look ~same but are different. But you can also smuggle arbitrary byte streams in any character via "variation selectors". So this emoji: 󠅧󠅕󠄐󠅑󠅢󠅕󠄐󠅓󠅟󠅟󠅛󠅕󠅔 is 53 tokens. Yay https://
paulbutler.org/2025/smuggling
-arbitrary-data-through-an-emoji/
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Inspiring Domain-Specific Educational Content Through LLM Introduction Video
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Part of the reason for my 3hr general audience LLM intro video is I hope to inspire others to make equivalents in their own domains of expertise, as I’d love to watch them.
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Language Priors Steering Thoughts in AI Models
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Cute idea, reminds me of “let’s think step by step” trick. Both lean on the language prior to steer the thoughts.
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Hyperbolic hosts Llama 3 405B Base in bf16 precision
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afaik Hyperbolic is the only place that hosts my <3 Llama 3 405B Base, and in bf16 precision. So thank you 🙂