Anthropic Unveils Claude Fable 5, Its First Public Mythos-Class AI
Anthropic unveiled Claude Fable 5, its first public Mythos-class AI, claiming superior general-use performance across software engineering, knowledge work, vision, and science with conservative safeguards; cybersecurity questions are routed to Opus 4.8. A related Mythos 5 rollout targets cyberdefenders via Project Glasswing. Pricing is $10 per million input tokens and $50 per million output tokens; Fable 5 is initially available in Pro/Max/Team/enterprise plans through June 22, after which usage credits apply, with plans to re-add it to subscriptions when capacity allows; Apple is among Glasswing partners.