AI image model comparison

GPT Image 2.5 Sunburst vs Nano Banana 2

Image quality, cost per image, and editing features compared side by side. Or skip the guesswork and generate with both.

GPT Image 2.5 Sunburst is an image generation and editing model from OpenAI, positioned as the precision-oriented tier of the GPT Image 2.5 series.

Per image
Not available
Output / 1M
$30
Image Elo
Not available
google logo

Google

Nano Banana 2

Gemini 3.1 Flash Image

Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed.

Per image
$0.067
Output / 1M
$60
Image Elo
1277

At a glance

Quick verdict

Which model wins on the things that matter most when you're making images.

Cheaper per image

Not available

Only one lists a per-image price

Better image quality

Not available

Not enough arena data

Better at editing

Not available

Not enough arena data

Newer release

openai logo

GPT Image 2.5 Sunburst

Released September 9, 2026

Quality

Image quality rankings

Elo ratings from Design Arena, where people vote between two anonymous images made from the same prompt. Higher is better.

Image generation

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2#4 · 65.1% wins1277

Image editing

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2Not available

Graphic design

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2#4 · 66.3% wins1262

Logos

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2#4 · 62.9% wins1262

Pricing

GPT Image 2.5 Sunburst vs Nano Banana 2 price per image

What each image actually costs, plus the underlying API rates. Cheaper option highlighted.

Metricopenai logoGPT Image 2.5 Sunburstgoogle logoNano Banana 2
Cost per imageEstimated, ~1 megapixel (1024×1024)Not available$0.067
Image outputPer 1M image tokens$30$60
Tokens per imageHow many image tokens one ~1MP image usesNot available1,120
Prompt textPer 1M input tokens$8$0.50

What it costs in practice

Estimated totals at standard resolution.

Single image

1 image

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2$0.067

Social media batch

50 images

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2$3.36

Product catalog

1,000 images

openai logoGPT Image 2.5 SunburstNot available
google logoNano Banana 2$67.20

Specs

Inputs, outputs, and limits

What each model accepts, what it gives back, and how long your prompt can be.

Metricopenai logoGPT Image 2.5 Sunburstgoogle logoNano Banana 2
AcceptsImage, TextImage, Text
ProducesImageImage, Text
Max prompt lengthText plus reference images400K tokens131K tokens
Reasoning stepNoOptional
Release dateSeptember 9, 2026June 18, 2026

Features

Supported features

Creative controls available for each model.

Metricopenai logoGPT Image 2.5 Sunburstgoogle logoNano Banana 2
Image editingAccepts reference or source imagesSupportedSupported
Text alongside imagesCan explain or caption what it madeNot supportedSupported
Thinks before drawingPlans the image with a reasoning stepNot supportedSupported
Reproducible seedsSame seed, same imageSupportedSupported
Temperature controlTrade consistency for varietyNot supportedSupported

FAQ

Frequently asked questions

Can GPT Image 2.5 Sunburst and Nano Banana 2 edit existing images?

Yes. Both accept reference images, so you can upload a photo and ask for changes like a new background, different lighting, or added text.

Can I use GPT Image 2.5 Sunburst and Nano Banana 2 at the same time?

Yes. Shortcut Chat sends one prompt to multiple image models at once, so you can see GPT Image 2.5 Sunburst and Nano Banana 2 results side by side and keep the one you like.

openai logogoogle logo

Why choose? Generate with both.

Send one prompt to GPT Image 2.5 Sunburst and Nano Banana 2 at the same time. See both images side by side and keep the one you like.