AI Image Detectors Fail on Compressed Files: Are Scores Reliable?

South_Researcher_456 · reddit · 2026-08-23

Experiments show that AI image detectors perform well on clean, uncompressed AI outputs but lose confidence significantly when real-world variables like social media uploads, screenshots, or minor cropping are introduced. This raises questions about the utility of these tools: should an 85% AI probability be considered proof, or merely a secondary signal to visual inspection? Determining AI origin becomes difficult when detector scores conflict with visual artifacts.

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