AnalysisPolicyJuly 25, 2026

Opus 5 is Anthropic's least prompt injectable model yet

Boris Cherny highlights that Opus 5 is Anthropic's least prompt injectable model yet, based on prompt injection evals and red teaming results buried in the system card.

Featured · Boris Cherny

1 source

Daily brief

Get tomorrow's AI brief in your inbox

More stories today

Open the live feed
Opus 5 is Anthropic's least prompt injectable model yet — AIBriefs