How Do You Catch Behavioral Regressions in LLM Agents Between Releases?

Beautiful_Belt_601 · reddit · 2026-09-11

A practitioner describes a failure mode functional testing misses: LLM agents can pass tests after a release yet drift in ways that hurt the business — more aggressive discounting, different pricing choices, weaker escalation, lower conversion. The thread asks how production teams handle this: replay datasets, eval harnesses, shadow traffic, judge models, or domain-specific metrics.

Related event: Agents Pass Tests but Drift Economically: A Production Monitoring Gap(2 posts)→

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