Anthropic model card removed Claude Fable 5 and Mythos 5 model overview content.

Builders lose published API and availability references for Fable 5 and Mythos 5 on this page.

The removed text listed Claude Fable 5 as widely released and Mythos 5 under Project Glasswing.

• Jun 10, 2026Anthropic removed model overview text listing Opus 4.8, Sonnet 4.6, and Haiku 4.5.
• Jun 10, 2026Anthropic pricing removed the five-question Claude plan recommendation flow.
• Jun 10, 2026OpenAI pricing page removed the listed API pricing table from the monitored snapshot

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