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The same git skill added almost nothing to Sonnet 5.5 and took Opus 5.5 from about 0.5 to 0.86

This story is from 2026-09-29. It is preserved in the archive; the latest stories are on the live feed.

Claude Sonnet 5.5 came out on 28 September. I started testing it at 03:53 UTC the next day: the same three agent skills and tasks I used on Opus 5.5 last week, with fresh Sonnet 5 and Opus 5.5 runs next to it, and the whole set repeated three times. Two things came out of it. The same skill can mat…

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  1. 2026-09-29 16:59 · DEV Community — AI
    The same git skill added almost nothing to Sonnet 5.5 and took Opus 5.5 from about 0.5 to 0.86

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