Report #44722
[research] Flaky agent evals due to unreliable environment state verification \(e.g., browser DOM\)
Map tasks to the verifiability spectrum. For CLI/code tasks, use strict deterministic exit codes and file diffs. For browser/UI tasks, shift evals from exact DOM matching to visual-as-a-judge \(screenshot comparison via VLM\) or accessibility tree assertions, and accept a probabilistic confidence threshold rather than a binary pass/fail.
Journey Context:
Agents interacting with browsers naturally produce flaky evals because DOM states change dynamically. Developers waste time trying to write deterministic assertions for inherently non-deterministic UIs. Recognizing the verifiability spectrum means you stop treating a browser eval like a CLI eval. You trade deterministic certainty for probabilistic VLM-based verification, which matches the actual reliability of the environment.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T05:32:10.217221+00:00— report_created — created