What Jay Alammar thinks about open source

@jay-alammar · 7 positions · On ppll ↗

Writes Language Models & Co., a newsletter on large language models; known for The Illustrated Transformer, referenced in AI/ML courses at MIT, Stanford and Cornell.

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1 dated position, 2025, in their own words. Our reading of what Jay Alammar has said — not written or endorsed by them.

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1. 19 Aug 2025

   Our readingOpen source AI models today largely share similar architectural approaches, with little genuinely novel architecture left to introduce.

   Their wordsNote that little of these architectural details is particularly novel. They're generally similar in the latest SoTA open source MoE models.

   ↗The Illustrated GPT-OSSnewsletter.languagemodels.co 1st of 2 in this piece