Sovereign Ascent: Anthropic Deploys Flagship Fable 5 Architecture
ID: 66f3b432-4d32-54c5-b1f6-6607f4e8cd41
STIX ID: report--66f3b432-4d32-54c5-b1f6-6607f4e8cd41
Feed Name: securityonline.info
Anthropic announced Fable 5, a flagship AI model derived from the classified Mythos architecture that demonstrates significant multimodal vision and code-synthesis advances; the report details its lineage (Project Glasswing), safety routing to Opus 4.8, a restricted Mythos 5 for select partners, a free access promotional window through June 22, 2026, and planned usage-based pricing afterward.
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