Claude Fable 5 and Claude Mythos 5

ahboyashreads (@ahboyashreads), Jun 9, 2026, 17:11 UTC

Claude Fable 5 and Claude Mythos 5 Claude Fable 5 • State-of-the-art results on complex, long-horizon benchmarks • Advanced agentic coding • Can handle complex visual tasks Claude Mythos 5 • Specific high-risk safeguards lifted for vetted professionals • Advanced cybersecurity and life sciences capabilities • Currently restricted to Project Glasswing cybersecurity partners in collaboration with the US government https://www.anthropic.com/news/claude-fable-5-mythos-5

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