Anthropic says its new Fable 5 AI model can handle long-running tasks and agents. The tradeoff: higher costs, tighter safeguards and usage limits.

Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in high-risk areas like…

The leading AI company says the new model is similar to the Mythos model previewed in April but safe for general use.

Fable 5 is the first Anthropic Mythos model released for public use.