Anthropic removed model overview text covering Fable 5, Mythos 5, channels, and availability.

Model selection guidance and distribution details are no longer present on the monitored modelcard page.

Builders tracking Claude API, Bedrock, Google Cloud, and Microsoft Foundry references should treat the page surface as changed, not the underlying offers.

• Aug 12, 2026Claude Managed Agents webhooks now cover environment and memory store lifecycle events without polling.
• Aug 12, 2026`version` is now optional when updating a Claude Managed Agents agent.
• Aug 12, 2026Anthropic is sunsetting the legacy Claude Console Workbench, with access ending on August 17, 2026.

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