Introducing Pangram 4

Pangram 4 is described as 6x larger than predecessor with improvements on humanizer detection, AI-assisted text, and interspersed human-AI content. Internal claims: FPR 0.0041% (~1/24,000 docs), FNR 0.3396% on challenge sets; 98.83% humanizer detection across 13 tools. Pangram 3 supported until Sep 30, 2026. Image detector research preview launched same day.