UK AISI ran pre-deployment safety testing on Anthropic's Mythos 5.2, results in system card

HZoete · x · 2026-11-10

The UK AI Security Institute (AISI) conducted pre-deployment testing of Anthropic's Mythos 5.2, with results summarised in the model's published system card. Kanishka Narayan highlights it as proof the UK has built a genuinely world-class evaluation capability.

The pre-deployment independent eval + system card disclosure flow is becoming a template for frontier model safety review.

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