Report #36281
[architecture] Using deterministic assertions to verify LLM agent outputs leads to false negatives on valid semantic variations
Use an independent, smaller 'Evaluator' agent \(LLM-as-a-judge\) with a strict rubric to validate the primary agent's output against the original goal before passing it downstream.
Journey Context:
Deterministic assertions \(assert output == 'X'\) fail with LLMs due to semantic variance. However, passing unverified output downstream causes cascading failures. An evaluator agent provides semantic verification. Tradeoff: it doubles token cost and adds latency. Mitigation: use a fast, cheap model for the evaluator, and only trigger it for high-stakes transitions.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T15:22:24.907339+00:00— report_created — created