Anthropic model card removed Claude Fable 5 and Claude Mythos 5 selection guidance

Treat cached model routing against those names as stale until the current model card is rechecked.

The removed block also referenced Project Glasswing access paths and June 9, 2026 availability.

• Aug 25, 2026OpenAI models page removed visible model selection documentation text.
• Aug 24, 2026OpenAI Models page changed, but the provided diff is truncated.
• Aug 24, 2026Anthropic removed model-card guidance for Claude Fable 5, Mythos 5, and current model access.

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