OpenAIAnthropicGooglexAIPerplexity
← Back to all updatesPublished ·Anthropic◆ Critical
Anthropic removed model overview text naming Claude Fable 5 and Mythos 5 availability.
The read
Builders lose public page evidence for model selection, availability channels, and Project Glasswing access language.
The frame
The removed text also said to start with Claude Opus 4.8 for complex agentic coding and enterprise work.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
- Jul 10, 2026Anthropic added the `agent-memory-2026-07-22` beta header, changing memory listing behavior.
- Jul 10, 2026Anthropic expanded Access Transparency docs for cmek_preserve events with examples, payload details, and preservation reason codes.
- Jul 10, 2026OpenAI is deprecating Atlas as browser-based agentic capabilities move into ChatGPT and Codex.
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