GPT Image 2 vs Nano Banana 2: Which AI Image Model to Use

Short answer: pick GPT Image 2 when the image has to carry readable text, a diagram, a UI, or a precise layout — and when you want the cheapest possible entry point. Pick Nano Banana 2 when you need fast photoreal output, the same character across multiple shots, or many reference images fed into one generation. Both run on Prospolabs at a per-image price in USD, so the choice is about the job, not about which bill you can stomach.

Both models cover text-to-image and image editing. The difference shows up in what each one is built around. GPT Image 2 is reasoning-first: it plans the composition before it paints, which is why it places type, table cells, and UI elements where you asked. Nano Banana 2 — Google's Gemini 3.1 Flash Image — is speed-first and photoreal, with strong identity preservation and support for up to 14 reference images in a single call.

Head-to-head

In-image text and typography

This is GPT Image 2's clearest advantage. Signage, posters, app screenshots, slide layouts, packaging copy, multi-line paragraphs — it renders type that reads cleanly and lands where you specified. If your image fails when a word is misspelled or a label drifts off its button, GPT Image 2 is the safer pick. Nano Banana 2 handles short text well, but the longer and more structured the copy gets, the more GPT Image 2 pulls ahead.

Photorealism

Nano Banana 2 is the one to reach for when the frame should feel photographed — skin, fabric, product materials, cinematic lighting, a hero shot that looks camera-shot rather than rendered. It is also fast, which matters when you are iterating on look and feel or generating variants in bulk. GPT Image 2 produces clean realistic images too, but Nano Banana 2 has the edge on that final photographed texture.

Reference images and character consistency

Nano Banana 2 takes up to 14 reference images in one generation and keeps a character recognizable across scenes, outfits, and angles. For comic panels, brand mascots, repeated product photography, or a recurring face across a campaign, that consistency is the whole game. GPT Image 2 can edit from a source image, but it is not built around multi-reference identity locking the way Nano Banana 2 is.

Editing

Both edit existing images, but they edit differently. GPT Image 2 supports edits with an optional mask, so you can constrain a change to a precise region — swap text in one panel, fix a label, redraw a UI element — while leaving structure intact. Nano Banana 2 edits conversationally and fast, which suits restyling, background swaps, and identity-preserving changes where you want the subject held steady while everything around it moves.

Price

On Prospolabs you pay per image in USD — same price whether you generate from the dashboard or the API, and failed runs are refunded automatically. GPT Image 2 has three quality tiers: low at $0.0072 (retail $0.012), medium at $0.028 (retail $0.047), and high at $0.077 (retail $0.128). That low tier is the cheapest entry point of the two by a wide margin — useful for drafting and high-volume iteration before you commit to a finished render.

Nano Banana 2 is priced by output resolution: 1K at $0.048 (retail $0.080), 2K at $0.072 (retail $0.120), and 4K at $0.096 (retail $0.160). So a quick GPT Image 2 low-tier draft is several times cheaper than any Nano Banana 2 frame, while a high-tier GPT Image 2 image and a 1K–2K Nano Banana 2 image land in a similar range. Match the tier to the deliverable rather than always reaching for the top.

Where each one wins

• GPT Image 2: posters and signage, slide and diagram layouts, app and UI mockups, packaging with real copy, anything text-heavy, and cheap high-volume drafts at the $0.0072 low tier.
• Nano Banana 2: product and lifestyle photoreal shots, a consistent character across many frames, multi-reference compositions (up to 14 inputs), and fast iteration on look and feel.

If neither is the exact fit

Two siblings cover the edges. Seedream 5 Lite at $0.014 per image is the budget workhorse for bulk text-to-image where you do not need GPT Image 2's typography precision or Nano Banana 2's reference stack. At the other end, Nano Banana Pro at $0.09 pushes Nano Banana 2's strengths further for top-tier finished work — we break down that step up in Nano Banana 2 vs Pro. If price is the deciding factor across the whole field, start with the cheapest AI image API rundown.

Which to choose

Let the deliverable decide. If the image has to communicate exact information — words, tables, interfaces, ordered panels — use GPT Image 2, and start at the low tier while you iterate. If the image has to feel real or has to hold a character across shots, use Nano Banana 2, and step from 1K up to 4K only when the final asset earns it. Many production pipelines use both: GPT Image 2 for the text-and-layout pass, Nano Banana 2 for the photoreal hero. Compare every tier side by side on the price comparison page before you wire one in.

Because both models bill the same per-image price on Prospolabs and refund failed runs automatically, there is no lock-in to testing both — top up from $5, generate a handful on each, and keep whichever wins your actual prompt.