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A Free Model Rewrote My Parser. Differential Testing Decided Whether I Merged It.

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

Every free model I have used can write a plausible atoi in seconds. Plausible is not correct, and the distance between those two words is exactly where agent-generated patches tend to hide their bugs. This article is a concrete verification ladder for that situation: unit tests, differential testin…

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  1. 2026-08-26 11:42 · DEV Community — AI
    A Free Model Rewrote My Parser. Differential Testing Decided Whether I Merged It.

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