How We Test LLM Features So They Don't Regress in Production
This story is from 2026-09-30. It is preserved in the archive; the latest stories are on the live feed.
We shipped an LLM-powered classification feature for a client last year. It worked well. Three weeks later, after a routine prompt tweak, it started miscategorising a specific edge case — one that the team had explicitly tested for during development. Nobody noticed for four days. The problem was n…
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- 2026-09-30 03:53 · DEV Community — AI
How We Test LLM Features So They Don't Regress in Production