OpenAIAnthropicGooglexAIPerplexity
← Back to all updatesPublished ·Anthropic◆ Critical
Anthropic removed model card text covering Claude Fable 5 and Claude Mythos 5.
The read
Builders lose official page evidence for API, Bedrock, Vertex, and Project Glasswing references.
The frame
Removed text described Fable 5 as the most capable widely released model and Mythos 5 as part of Project Glasswing.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
- 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.
Bring us your project →