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Claude Fable 5
AnthropicAnthropic's most capable widely-released model for demanding reasoning and long-horizon agentic work. Sibling to Claude Mythos 5. 2x/1.5x surcharge applies above 200K input tokens. Globally re-available since Jul 1, 2026 after temporary U.S. export-control restriction.
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Tracked on the AI Model Release Tracker — view release status & countdown
Open tracker →slow speedtextimageReleased 2026-06-09