AISimon Willisonabout 3 hours ago
Quoting Claude Opus 5 system prompt
1 min read
Anthropic suspended Claude Fable 5 and Claude Mythos 5 on June 12, 2026, to comply with U.S. Department of Commerce export controls. The Department lifted controls on June 30, and Anthropic restored access on July 1, 2026.
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In this storyAnthropic
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