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Anthropic Fable 5.1 Makes AI Agents Cheaper, Smarter and More Autonomous. But Can We Trust Them?

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

Anthropic just released Fable 5.1 , and the obvious thing is that it’s a better model. Better at coding. Better at research and Better at long-running tasks. There are benchmark numbers for all of that. But I think the more important part is what Anthropic is doing to the economics of letting an AI…

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  1. 2026-09-01 19:39 · DEV Community — AI
    Anthropic Fable 5.1 Makes AI Agents Cheaper, Smarter and More Autonomous. But Can We Trust Them?

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