Claude Suddenly Replied in Russian to a User Who Never Spoke It
roshbakeer · reddit · 2026-09-05
A Reddit user reports that Claude, which he only ever used in English, suddenly started replying in Russian. He suspects his Russian-sounding name triggered it, possibly correlated with a teammate of similar name who uses Russian. The thread asks whether others have seen similar language-switching behavior, hinting the model may infer user language from names alone.
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