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Claude Opus 5: What I’d Measure Before Switching My Coding Agents

This story is from 2026-09-17. It is preserved in the archive; the latest stories are on the live feed.

The interesting part of Claude Opus 5 isn’t just the benchmark jump. It’s the claim that a model priced like Opus 4.8 can handle work that previously justified paying for Fable 5. Anthropic’s July 24, 2026 release puts Opus 5 at $5 per million input tokens and $25 per million output tokens , with a…

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  1. 2026-09-17 15:39 · DEV Community — AI
    Claude Opus 5: What I’d Measure Before Switching My Coding Agents

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