GPTZero launches 4o detector, claims it beats Pangram on third-party benchmarks
JeremyNguyenPhD · x · 2026-09-25
GPTZero released GPTZero 4o, billing it as the world's most accurate AI text detector: fewer than 1 in 10,000 human texts falsely flagged, and 98.4% detection of Claude Fable. The team claims wins over Pangram on two third-party benchmarks (DetectRL, Epoch AI bench) and says it found major biases in Pangram. One commenter asks the community to verify.
Related event: GPTZero Launches 4o AI Text Detector with Ultra-Low False Positive Rate(2 posts)→
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