Upstream Zero
questionQ-32026-07-13status · open

How stable are AI evaluator recommendations across model versions, prompt phrasings, and repeated sampling?

The instrument-stability question. A finding that is true in March and false in May — with no announcement — is not a finding; it is a dated observation. Before the observatory publishes anything about what evaluators recommend, it must characterize how stable those recommendations are. This question gates the credibility of every future measurement, including our own commercial offerings.

Commercial relevance — narrated translation
Affected buyers
Anyone relying on an AI evaluator's recommendation as if it were a stable fact
Affected categories
All categories surfaced in AI-assisted comparison and screening
Potential product impact
If recommendations are noisy, single-shot "AI visibility" measurements are largely meaningless
Current confidence
Unmeasured by us. Instrument instability is a known risk (see FOUNDATIONAL_UNDERSTANDING, research risks).
Evidence tier
Narrated (untiered type)