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Anthropic cuts Claude Fable 5.1 pricing by up to 45 percent while claiming a performance gain

9/2/2026

The case for Claude Fable 5.1 is that Anthropic says it outperforms its predecessor and costs about 25 percent less in typical use, up to 45 percent less for complex agentic tasks.

What complicates the pitch is that the release is packaged with fixes to customer complaints about data retention and overzealous safeguards. Cheaper tokens and a better model would be a clean story.

Cheaper tokens plus a complaint list is something else. The agentic cost reduction is structural.

Anthropic lowered the price on cached data, which is the processed and stored information from earlier in a conversation or workflow.

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