Testing Strict Prompt Adherence in GPT Image 1.5 vs. Gemini

The user compares GPT Image 1.5 and Gemini using the same detailed prompt, finding that GPT Image 1.5 is more 'creative' and less adherent to strict rules, while Gemini shows better compliance. The prompt details specific visual constraints for an isometric city wall scene.

Three-quarter isometric camera (40–45°)
City wall shape + framing + negative space
“Nothing (incl. water) outside the city walls”
Background symbols must be subtle
Material realism and scale discipline
Text handling / infographic hierarchy