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Claude Opus 5.5 Explained: Coding, Cost, and What Developers Need to Change

This story is from 2026-09-30. It is preserved in the archive; the latest stories are on the live feed.

An AI coding model can generate a convincing patch in seconds. The more useful question is how long it takes to produce a patch you can confidently merge. Did it find the relevant code? Preserve existing behavior? Test the failure case? Notice that its fix breaks under concurrent requests? That is…

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  1. 2026-09-30 08:22 · DEV Community — AI
    Claude Opus 5.5 Explained: Coding, Cost, and What Developers Need to Change

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