Anthropic removed the modelcard text for Claude Fable 5 and Mythos 5.

Builders lose on-page model selection guidance, API IDs, and availability notes for routing decisions.

The removed text named Opus 4.8 as the default for complex tasks and listed Fable 5 and Mythos 5 API, Bedrock, and Vertex references.

• Jun 22, 2026Anthropic removed model overview text for Claude Fable 5 and Mythos 5.
• Jun 22, 2026Anthropic pricing removed its five-question Claude plan recommendation flow.
• Jun 22, 2026Anthropic removed model overview text covering Claude Fable 5 and Claude Mythos 5

This is the world we build in. It moves this fast. We move with it.