Core Concept

Non-Deterministic Answers

Short answer

Non-deterministic answers refers to the fact that AI engines can return different responses to the same prompt on different runs, which is why AI visibility must be measured as rates across many prompts over time rather than from a single lookup.

Language models sample from probability distributions, so the same question can yield different brands, phrasing, or citations each time it's asked. Repeated identical prompts genuinely return different answers, which makes any single screenshot an unreliable measure of your visibility.

This is the central reason AI visibility is tracked as sampled rates over a broad prompt set and monitored as a trend. A small change, say from 8% to 11% citation share, can't be distinguished from random noise, so trends across many prompts matter far more than one reading. Honest measurement embraces this rather than pretending single answers are stable.

DeepLexa is built around non-determinism: it samples many prompts across engines and re-runs the same set over time so signal separates from noise.

How DeepLexa helps

DeepLexa handles non-determinism honestly, measuring rates across many prompts over time instead of trusting a single lucky answer.

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