PageTwins: I Planted One Defect on 100 Landing Pages. Which AI Graders Noticed?

Automated excerpt

The two text tasks (text-only models): GLM-5, DeepSeek-R1 and Qwen 3 235B. GPT-6 Luna caught 3 of 10 in both screenshot tasks and 9 of 10 from the text view alone. Gemini 3. 7 Flash caught 0 of 10 popups from text alone and 10 of 10 from screenshots.

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