Comparing Landing Pages Built by GPT 5.x Models

highsierraloft · reddit · 2026-07-10

The author used a brief 35-word prompt for Coca-Cola Zero to generate landing pages using GPT-5.4, GPT-5.5, GPT-5.6 Luna, Terra, and Sol at maximum reasoning settings, creating a comparison page. The test conditions prohibited the use of skills, allowing only standard AI and a customizable design library. Additionally, pages had to include at least five sections with the hero section at the top.

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