Opus 5.5 updates a classic meme after integer multiplication beats n log n

ctjlewis · x · 2026-10-07

OpenAI math researcher Elliot Glazer had Claude Opus 5.5 update a classic complexity meme, and it's being widely retweeted. The cited context: researcher Acer notes "we can do integer multiplication faster than n log n lol," admitting he was very surprised when the result came in — a new breach of the long-standing n log n barrier for integer multiplication. The post turns a real algorithmic breakthrough into a meme.

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