GPT Image 2.5 vs Nano Banana Pro (Gemini 3 Pro Image): Same Prompts, Side by Side
Two of the strongest image models today, run on the same three prompts on OkayPic: a product shot, a portrait, and a poster with lettering to test text rendering.
Last updated · prices from OkayPic
| GPT Image 2.5 | Gemini 3 Pro Image | |
|---|---|---|
| Maker | OpenAI | |
| Starting price | $0.03 / image | $0.03 / image |
| Specs | 1K · 2K · 4K · Up to 6 reference images · 7 aspect ratios | Up to 6 reference images · 8 aspect ratios |
Same prompt, side by side
Each prompt was run once on each model on OkayPic, no cherry-picking or editing.
Price
Both cost $0.03 / image on OkayPic; GPT Image 2.5 is the same price at 1K, 2K and 4K.
Which to pick
Compare the results above for your own taste: both render the LISBON lettering cleanly. GPT Image 2.5 is our default for character sheets and props in Flow; Nano Banana Pro is a strong choice for composing several reference images into one scene.
FAQ
Can I use both through one API?
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Yes — one OkayPic API key works for both; switch by changing the model field.
Do I need a subscription for either model?
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No. OkayPic is pay as you go for every model: top up from $2, pay per image or per second of video, and failed generations are refunded automatically.
More comparisons
Try them yourself
One balance for every model. Top up from $2, failed generations are refunded.