Claude Mythos 5 / Fable 5

Claude Fable 5 is Anthropic's fifth-generation AI model designed for complex, long-running tasks in coding, knowledge work, and enterprise projects, capable of working autonomously for extended periods with self-testing and verification capabilities. Available to Pro, Max, Team, and Enterprise users as well as developers via API at $10 per million input tokens and $50 per million output tokens, the model includes enhanced safeguards for cybersecurity and biology while supporting vision capabilities for document analysis and code evaluation.