My GPT Image 1.5 vs. Nano Banana Pro Test: The Forbidden City as a 3D Scroll
Just as I expected, Nano Banana Pro does a much better job respecting historical accuracy and architectural logic, no surprise given it’s powered by Gemini 3 Pro and taps into Google Search’s knowledge base.
GPT Image 1.5, on the other hand, completely violates the most fundamental principle of Chinese imperial palace design, especially for buildings of the Hall of Supreme Harmony’s caliber: all principal halls must align along a single north-south axis, with strict bilateral symmetry. On top of that, every single Chinese character it rendered was wrong. Guess @OpenAI called this update “1.5” instead of “2” because they know full well the model gets crushed by 🍌 when it comes to world knowledge and reasoning.
Still, for all its shortcomings in common sense and reasoning, I really do love the creativity GPT Image 1.5 brings. The flowing scroll, the misty atmosphere, the bolder palette, it all feels like a scene straight out of the ink-wash animations I’ve always imagined.
