ToolGlance AI detector base-rate scenarios, version 2026-08-28
Original chart and scenario table: CC BY 4.0. Linked source material retains its own rights.
N=10000; TP=N*p*s; FP=N*(1-p)*f; FN=N*p*(1-s); TN=N*(1-p)*(1-f).
p=assumed AI share; s=assumed detection rate; f=assumed false-positive rate, all proportions.
Precision=TP/(TP+FP); undefined when there are no flags.
Chart holds s=0.99 and f=0.01. Scenario counts can be fractional expectations.
No classifier was run. No measured vendor performance or current-market ranking is claimed.
Citation: ToolGlance (2026), Are AI detectors accurate? https://toolglance.com/guides/ai-detectors-accuracy-humanize-writing-2026