MODEL COMPARISON

GPT Image 2.5 vs Nano Banana Pro: Which One Should You Use

The site has 1707 and 709 reproducible cases for each, respectively. Below, we compare strengths, prompt writing, and final results side by side.

The Bottom Line

GPT Image 2.5 is better for Executing long paragraph-length scene descriptions; Nano Banana Pro is better for Consistent characters across multiple reference images. Running the same idea through both is usually worth it — they "listen" differently, so the prompt has to be adjusted to match.

Strengths & Prompt-Writing Comparison

GPT Image 2.5

Executing long paragraph-length scene descriptionsFine gradation in materials and lightingStable letterforms for in-image text and layoutProduct and still-life texture fidelity

Split the frame into four blocks - subject, environment, light, camera - and write each separately; that works far better than piling on style words. It is also more reliable than the previous version at local edits phrased as "change only this one thing, leave the rest alone".

Nano Banana Pro

Consistent characters across multiple reference imagesIn-image text layout & renderingFollows long, structured prompts closelyFine-grained layout for e-commerce & infographics

Feel free to use structured formats (JSON, sectioned lists) when writing prompts — it parses hierarchical instructions much better than piles of short phrases. When text needs to appear in the image, write the exact wording in quotes.