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Claude Fable 5 vs Sonnet 5: Route by Cost per Successful Task

This story is from 2026-09-21. It is preserved in the archive; the latest stories are on the live feed.

My default would be Sonnet 5 for interactive work and Fable 5 for difficult, expensive-to-fail tasks. That is a routing policy, not a claim that one model wins everywhere. The useful comparison is how much a completed, validated workflow costs, including retries, latency, and human intervention. Th…

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  1. 2026-09-21 02:42 · DEV Community — AI
    Claude Fable 5 vs Sonnet 5: Route by Cost per Successful Task

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