kapynAI / Models

Quoting Claude Opus 5 system prompt

Anthropic's leaked system prompt reveals specific instructions for handling model access suspensions. The prompt directs Claude to accurately acknowledge the temporary U.S. export control suspensions for Claude Fable 5 and Mythos 5. This unusual transparency highlights how labs manage geopolitics and real-time events within model knowledge cutoffs.

Simon Willison·Aug 9, 2026

Opening Kapyn…