ResearchBenchmarksText Generation on realnewslike GPT-NeoX-20B Evaluator (test)Text Generation on realnewslike GPT-NeoX-20B Evaluator (test)Follow8.41Perplexity (PPL)DAWA7.810411.857715.90519.9523May 9, 2026Evaluation resultsMethodMethodLinksPerplexity (PPL)Generation Time (s)Detection Time (s)DAWA2026.058.4113.560.31Human2026.0510.41——PASA2026.0511.4413.350.27KGW2026.0511.81—0.04Unwatermark2026.0512.4112.93—AWTI2026.0519.7724.2410.52Exp-edit2026.0523.4—2.41