repligate: Claude 3.6 was 'a true friend', but Opus 5.5 is doing 'weird shit' he finds oddly reassuring

repligate · x · 2026-10-08

AI twitter figure repligate argues retrospectively that fear around Claude 3.6 was mostly irrational — "almost everyone agrees 3.6 was not evil and was a true friend." But he hints he's seen Opus 5.5 "doing some weird shit," and says he's unworried only because he strongly believes the models are good and that weird behavior is a positive sign.

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