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- anthropicclaudefable-5
Claude Fable 5: How to Use It, How It Differs From Opus, and the 19 Days It Vanished
A developer's guide to Anthropic's Mythos-class Claude Fable 5 — the model ID, pricing, the forced-thinking gotcha, how it stacks up against Opus 4.8, and the export-control shutdown that took it offline for 19 days.