Diff Last-Good Completions, Not Just Pass Rate
This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.
Silent regressions in prompt systems rarely trip a failing test because the grader still awards a pass. A pairwise harness that diffs each new completion against a last-good baseline flags those shifts even when the rubric stays green. Absolute scores answer whether a case remains acceptable under…
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- 2026-09-12 18:56 · DEV Community — AI
Diff Last-Good Completions, Not Just Pass Rate