Researchers report models suddenly solving their niche problems, suspect training on user inputs

matthew_d_green · x · 2026-09-09

Cryptographer Matthew Green relays that multiple researchers in his field have noticed models getting much better at solving their specific problems over short periods, even when asked in new contexts — several wonder if the models are being trained on their inputs. Green cautions that such anecdotes are hard to pin down: it could be normal model improvements, slightly different prompts, or synthetic data generated from researchers' inputs — but whatever it is, he has noticed it too.

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