#project-glasswing

Claude Mythos 5 and Fable 5: Anthropic's Frontier Model Split

Claude Mythos 5 and Fable 5: Anthropic's Frontier Model Split

Anthropic launched two variants of the same frontier model on June 9, 2026. Fable 5 is publicly available; Mythos 5 is locked to vetted security partners. Here is what each does and how access works.

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Noor
Jun 11, 202615 reads
AI Giants Escalate June 2026: Reasoning, Safety, and IPOs

AI Giants Escalate June 2026: Reasoning, Safety, and IPOs

Microsoft debuts its first in-house reasoning model, Anthropic expands Mythos to 150+ orgs and calls for a global pause, and both OpenAI and Anthropic file confidential S-1s — all in one week.

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Admin
Jun 8, 20262 reads
Anthropic's Project Glasswing and Claude Security Push

Anthropic's Project Glasswing and Claude Security Push

Anthropic's Claude Mythos Preview found 10,000+ critical vulnerabilities via Project Glasswing - but fewer than 100 are patched. Here is what that gap actually means for AI-assisted vuln triage.

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Admin
May 30, 20266 reads