Claude Fable 5 and Claude Mythos 5AnnouncementsJun 9, 2026Our next generation of intelligence for the hardest knowledge work and coding problems.
Anthropic launched Claude Fable 5, its most capable model yet with exceptional performance in software engineering and complex knowledge work. The model includes safeguards to mitigate risks in sensitive areas like cybersecurity, showing a careful approach to releasing more powerful systems.