Nano Banana Pro vs. GPT Image 2 for Amazon and Shopify Product Photos

When the brief is "I need a product photo that looks like it came from a professional catalog," two models in our image generator compete for the job: Nano Banana Pro (Google) and GPT Image 2 (OpenAI). Both are capable of an excellent result, but they're not interchangeable — each has a clear strength, and the price per image varies quite a bit depending on the resolution you need.

The difference that matters most: how they treat the reference

If you upload a photo of your actual product as a reference (instead of a prompt from scratch), Nano Banana Pro tends to preserve the object's exact geometry more faithfully — proportions, logo, the precise packaging color. That's why we recommend it as the default choice whenever the product has to come out identical to the real thing: cosmetics, branded electronics, or anything where a customer could notice "that's not quite it."

GPT Image 2 stands out on composition and scene coherence when you ask for something more elaborate — for example, "the product on a wooden table with late-afternoon light coming through a window, a blurred coffee cup in the background." It reads complex art direction better, even if that means taking a bit more liberty with the product's exact details.

Resolution: you don't always need the highest tier

Both models price by the resolution you pick (1K/2K/4K), and this is where a lot of stores overspend credits without needing to:

• Amazon/Shopify listing: the platform resizes the image on upload anyway — 1K is indistinguishable on screen, and it's the cheapest tier on both models.
• Campaign banner or print: 2K or 4K pays off here, especially with GPT Image 2, whose "Auto" tier (where the model itself decides quality and size) usually nails the quality/cost balance if you'd rather not decide manually.
• Thumbnails and color variants for A/B testing: always use the cheapest tier — you're generating several versions and discarding most of them, so there's no reason to pay the premium rate on every attempt.

Aspect ratio: think about where the image lives before you generate

Both models support ratios beyond the classic square — 3:2 and 2:3 for catalogs that follow the standard photography aspect, 21:9 for wide category banners. Picking the right ratio at generation time saves you from cropping afterward — and cropping afterward almost always means losing margin around the product that you end up missing later.

Our quick recommendation

| Case | Model | Resolution | |---|---|---| | Product must look identical to the real thing (packaging, logo, color) | Nano Banana Pro | 1K | | Elaborate scene, styling, editorial look | GPT Image 2 | Auto or 2K | | High volume, A/B test variants | Whichever is cheaper on your plan | 1K | | Banner or print material | GPT Image 2 | 2K-4K |

If you're not sure which to use, the catalog lets you run the same prompt through both models for very little extra cost — for an important product, it's worth generating with both and comparing before you commit to one for the rest of your variants.