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Claude Fable 5 and Mythos 5 are here.
Claude新模型Fable 5全面开放，Mythos 5面向合作伙伴，性能全面超越Opus 4.8。
Claude Fable 5 and Mythos 5 are here. Same model, two names. What sets them apart isn’t capability, but guardrails. Fable 5 is available to everyone. …