Rumor: Anthropic Opus 5.1 Incoming, Resembling Fable/Opus Release

ChrisGPT · x · 2026-08-29

Reports suggest Anthropic's Opus 5.1 model is arriving soon. Speculation indicates it may follow a Fable/Opus release pattern rather than the standard Opus/Sonnet progression. Users can verify access using specific prompts about model history.

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