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Nano Banana 2 vs GPT Image 1.5

Nano Banana 2 by Google and GPT Image 1.5 by OpenAI, side by side: what each does, what a run costs in credits, and when to pick which. Both run on Kinoseed with one plan.

16 or 25 credits an image. You see the plan first.

Plans from $10 a month, cancel anytime.

Image made with Nano Banana 2 in Kinoseed
Nano Banana 2 Prompt: Photograph, from directly overhead, a letterpress printer's ink-stained hands lifting a freshly pulled poster from the bed of a cast-iron platen press, the ink still wet and holding the light. The poster reads "SET IN MOTION" in heavy condensed sans-serif capitals pressed deep black into thick cotton paper, with "EDITION OF 40" in small letterspaced type beneath it. Around it on the bench: trays of metal type, a composing stick, and a rag gone black with ink, with late-afternoon window light raking across drifting paper dust. Horizontal flat-lay composition, the poster filling the centre of the frame. Editorial documentary photography, 50mm at f/2.8, warm tungsten mixed with cool daylight, visible paper fibre and deep ink blacks, fine 400-speed grain.
GPT Image 1.5 is the OpenAI image model released in late 2025, the version that came before GPT Image 2. It is good at precise edits that change what you ask for and leave the rest of the picture alone, and at accurate color.
GPT Image 1.5

Side by side

FeatureNano Banana 2GPT Image 1.5
Made byGoogleOpenAI
What it doesimage generation and editingimage generation and editing
Edits a photo you addYesYes
Price per image16 credits25 credits
Four images60 credits100 credits
Cheapest run16 credits for one image25 credits for one image

Prices are the credits a run spends, from the same rates the studio and the API charge.

Which to pick

  • Nano Banana 2 is the cheaper one: 16 credits an image against 25, so GPT Image 1.5 costs 56% more. When you want many options to choose from, that difference adds up.

About Nano Banana 2

Nano Banana 2 is Google's Gemini 3.1 Flash Image model, the faster sibling of Nano Banana Pro. It is the default model in the Kinoseed image studio because it balances quality, speed and price.

It generates from a prompt and edits from a reference image: change an outfit, replace a background or restyle a photo by describing the change. Most of Kinoseed's photo apps run on it, and the letterpress poster on this page came from a single prompt.

Nano Banana 2: prices and examples

About GPT Image 1.5

GPT Image 1.5 is the OpenAI image model released in late 2025, the version that came before GPT Image 2. It is good at precise edits that change what you ask for and leave the rest of the picture alone, and at accurate color.

In Kinoseed you can generate from a prompt or upload a reference image to edit. It is a solid choice for product photos, brand graphics and retouching where the result has to stay close to the original.

GPT Image 1.5: prices and examples

Questions

What is the difference between Nano Banana 2 and GPT Image 1.5?
Nano Banana 2 is Google's Gemini 3.1 Flash Image model, the faster sibling of Nano Banana Pro. It is the default model in the Kinoseed image studio because it balances quality, speed and price. GPT Image 1.5 is the OpenAI image model released in late 2025, the version that came before GPT Image 2. It is good at precise edits that change what you ask for and leave the rest of the picture alone, and at accurate color.
Which is cheaper, Nano Banana 2 or GPT Image 1.5?
Nano Banana 2 starts at 16 credits for one image; GPT Image 1.5 at 25 credits for one image. Runs spend credits from a plan.
Should I use Nano Banana 2 or GPT Image 1.5?
Nano Banana 2 is the cheaper one: 16 credits an image against 25, so GPT Image 1.5 costs 56% more. When you want many options to choose from, that difference adds up.

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