GPTZero Launches 4o AI Text Detector with Ultra-Low False Positive Rate

GPTZero has released GPTZero 4o, a general-purpose AI text detector with a false positive rate as low as 1 in 10,402, stronger resistance to paraphrasing attacks, and claimed wins over Pangram in third-party benchmarks.

2026-09-25 ~ 2026-09-25 · 2 related posts

• GPTZero launches 4o detector with 1/10,402 false positive rate, robust to paraphrasing attacks — sethlazar · 2026-09-25
• GPTZero launches 4o detector, claims it beats Pangram on third-party benchmarks — JeremyNguyenPhD · 2026-09-25