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Anthropic’s new Fable release is cheaper, less restrictive

Tuesday, September 1, 2026


Anthropic released Fable 5.1, a model update that reduces API token costs and adjusts the model's safety guardrails to generate fewer false positives, according to the company.

Original reporting: https://techcrunch.com/2026/09/01/anthropics-new-fable-release-is-cheaper-less-restrictive/

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