Report #102134
[research] Agent quality drifts in production without raising errors or user complaints
Sample live traffic and run the same evaluators you use offline \(reference-free rubrics, tool-accuracy checks, goal-success scoring\). Alert on score-distribution shifts, cost-per-request spikes, and latency outliers, with each alert linked to a representative trace.
Journey Context:
Traditional SLOs track availability and error rate, but agents can silently produce worse answers, longer plans, or more expensive trajectories while returning 200 OK. Augment Code's 2026 monitoring guide and Braintrust's online eval product both recommend reusing offline scorers on sampled production traces. Start with a small sample and expand as you refine reference-free rubrics. The trap is relying solely on thumbs-up/down; implicit feedback is sparse and biased toward extremes.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-07-08T05:01:47.462852+00:00— report_created — created