GPT Image 2.5 vs Nano Banana Pro

Choose controls before choosing a label

GPT Image 2.5 vs Nano Banana Pro is a choice about image workflow, not an automatic quality ranking. SeaDance offers both for text-led and reference-led creation. GPT Image 2.5 exposes quality levels as well as size variants, while Nano Banana Pro uses size variants without that separate quality menu. The number of reference images you need and the shape of the deliverable can make the practical choice clearer than the model name.

For a brief that needs explicit low, medium or high quality settings, GPT Image 2.5 is suitable. For a brief that fits the simpler size-based menu and its reference allowance, Nano Banana Pro is suitable. The tables compare purchasable settings. They do not establish which model produces the best typography, most realistic materials or strongest subject preservation for every task.

What the developers describe

OpenAI introduced GPT Image 2.5 in its ChatGPT Images 2.5 announcement; on SeaDance the model is offered as two variants, Flare and Sunburst, each with its own credit table below. According to Google, Nano Banana Pro is an image generation and editing model built on Gemini. Those descriptions provide background. SeaDance's available sizes, ratios, quality controls and reference counts are listed below; broader manufacturer capabilities outside this offering are not available on SeaDance.

Use a brief-specific acceptance check: the subject must remain recognizable, required objects must be present, and the composition must fit the intended use. If text appears in the result, read it carefully before sharing. Neither an additional quality tier nor a larger output automatically guarantees correct lettering or factual content. These are editorial review suggestions rather than performance claims about either model.

Prices checked November 4, 2026. Every dollar estimate uses the Basic monthly plan: $29.90 for 149 credits, or about $0.20 per credit. Dollar amounts allocate a prepaid balance; they are not individual checkout prices. Whole-request credit charges are rounded upward before conversion to dollars. New accounts start with 0 credits and require a paid plan or credit pack to generate.

GPT Image 2.5: text-to-image prices

Flare and Sunburst have identical SeaDance credit prices at matching size and quality settings. The table applies to both. Quality is separate from the size label, so do not treat a size selection as a high-quality selection. These figures are for a request without reference images; adding images switches to the reference-based pricing calculation.

GPT Image 2.5: with a reference image

This table uses one uploaded reference. Additional references can increase the price further. For example, 1K high with four references costs 4 credits, approximately $0.80; that example applies to Flare and Sunburst. Check the quote with the actual image count rather than using the no-reference table for a reference-led request.

Nano Banana Pro and the other image choices

Nano Banana Pro and Nano Banana 2.1 each offer 1K, 2K and 4K variants here. Their pricing does not expose GPT Image 2.5's separate quality levels. GPT Image 2 is pinned to a 1K low-quality configuration, with separate text and reference-based choices. The following table gives the text-led prices, except the explicitly marked GPT Image 2 reference row.

Nano Banana Pro keeps the listed charge with its accepted reference counts. Nano Banana 2.1 includes an input-image amount in the calculation, although rounding can leave the final integer credits unchanged. GPT Image 2 can also become more expensive with additional references: four references use 2 credits, approximately $0.40. Treat the complete request quote as the spending decision.

Ratios and reference limits

Image ratios are separate from the video rule: SeaDance videos are 16:9, while these image choices support the following shapes. The counts are maximum uploaded still references for an Image to Image request, not a target you need to fill. GPT Image 2's text-only choice accepts no references; select its reference-based choice when you need images.

Position the alternatives around the job

GPT Image 2 is suitable when a simple fixed-size, fixed-quality request covers the task. Its limited settings can make the spending plan straightforward, but it does not offer the larger-size and separate quality menus of GPT Image 2.5. If the project needs a different size tier, choose a model that actually exposes it rather than asking the prompt to override the selected configuration.

Nano Banana 2.1 is suitable when its wider ratio menu or larger reference allowance fits the brief better than Pro's controls. Nano Banana Pro is suitable when its accepted ratios and smaller reference set already cover the task. These recommendations describe workflow fit, not a claim that one model is universally more capable. Keep the source material consistent and remove references that add conflicting subject details.

A practical comparison brief

Start with the intended image shape and the essential subject. Describe the composition, lighting and details that matter, then give each reference a clear purpose. If you need a product preserved while its setting changes, say which features must stay stable and which environment should change. Avoid asking for incompatible appearances from separate references. A smaller coherent set can be easier to explain than a larger ambiguous collection.

Use Text to Image to establish a new concept or Image to Image when existing material should guide the result. Check the quote again after changing quality, size or uploads. Compare finished images against the same brief, inspect essential text and geometry, and keep the chosen prompt with its settings. The image generator and pricing page provide the relevant controls and account purchase options.

Frequently asked questions

Sources

External background checked November 4, 2026. SeaDance settings and credit quotes are described separately above.

• OpenAI: introducing ChatGPT Images 2.5
• Google: introducing Nano Banana Pro

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