Hands-on with Claude Fable 5: impressive results with complex projects, including a data analysis tool built in just 9.5 hours and an interactive isochrone map (Ethan Mollick/One Useful Thing)

Jun 09, 2026 - 21:10
Updated: 2 hours ago
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The screenshot shows the Claude Fable 5 interface alongside a data analysis tool and an interactive isochrone map.

Ethan Mollick / One Useful Thing:
Hands-on with Claude Fable 5: impressive results with complex projects, including a data analysis tool built in just 9.5 hours and an interactive isochrone map  —  Claude Fable represents another big jump in AI  —  I had early access to the first Mythos-class AI model being released to the public, Claude 5 Fable.

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Christopher Holloway

Christopher Holloway is the founder and director of Progressive Robot, a UK-based technology company. A full-stack engineer with more than two decades of experience, he works across PHP development, ecommerce, Linux infrastructure, technical SEO and AI automation, and writes here on technology, AI, hardware and software.

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