Browsing: Opus

Anthropic Releases Opus 5 With Capabilities Close to Fable 5

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A significant portion of the developer community spent months calling the next big Claude model “Opus 5.” Anthropic had a different idea. On June 9, 2026, the company announced Claude Fable 5 — its first publicly available Mythos-class model — alongside the restricted Mythos 5 twin. No “Opus 5” appeared anywhere in the documentation. Not…