The New Stack says Fable 5.1 billed more than twice as much as Fable 5 on the hardest task in its four-job comparison.
The New Stack reports that Anthropic shipped Claude Fable 5.1 on September 1, claiming doubled performance in agentic research. The outlet describes a comparison with Fable 5 across four real jobs, tracking every token. Both models scored perfectly, but Fable 5.1 billed more than double Fable 5 on the hardest task.
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The New Stack says Fable 5.1 billed more than twice as much as Fable 5 on the hardest task in its four-job comparison.
The New Stack reports that Anthropic shipped Claude Fable 5.1 on September 1, claiming doubled performance in agentic research. The outlet describes a comparison with Fable 5 across four real jobs, tracking every token. Both models scored perfectly, but Fable 5.1 billed more than double Fable 5 on the hardest task.
The New Stack@thenewstackClaude Fable 5.1 vs. Fable 5: On real work, I couldn't tell them apart.
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The New Stack@thenewstackClaude Fable 5.1 vs. Fable 5: On real work, I couldn't tell them apart.