Anthropic model card removed Claude Fable 5 and Claude Mythos 5 model details.

Routing rules tied to those Claude IDs now need a fresh source before implementation.

The removed text listed Fable as widely released and Mythos as a Project Glasswing successor.

• Jul 27, 2026Frontier vendors expanded runtime surfaces while removing public plan and model-routing signals.
• Jul 26, 2026OpenAI updated GPT-5.5 Instant to improve conversational quality in decision, advice, planning, research, and shopping tasks.
• Jul 25, 2026Enterprise and Edu users can find skills under Plugins, on the Skills tab in the Plugin Directory.

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