ImageRecommendedGemini 3.1 Flash Image Preview
Nano banana 2 — extreme ratio Gemini image generation with optional Google search grounding.
From $0.040 per image
Nano banana Pro — 4K Gemini 3 Pro Image, One Endpoint
Nano banana Pro is the community name for Google's Gemini 3 Pro Image. Nano banana Pro renders 1K, 2K, and 4K through reApi's OpenAI-compatible endpoint with the same JSON shape as every other reApi model.
Input
Free text · required · detailed prompts produce better results
Ten ratios from 1:1 to 21:9
1K / 2K / 4K — pick higher tiers for print or hero shots
1–4 images per request
Up to 14 · public HTTPS URLs only
Result
Try one of these prompts
What you can build with this model
Real-world workflows and production use cases you can build and ship with this model.
Ship 4K hero shots without a photo crew
Nano banana Pro renders at 4K — large enough for the homepage hero, the campaign banner, the press kit. Describe the shot, set resolution to 4K, pick a widescreen ratio, and the image lands in seconds. The same prompt template that drafted at 1K can scale up to 4K when the asset goes to print or to a retina display, with Nano banana Pro keeping the composition and color story stable across resolutions.
Render at 4K
Iterate at 1K, finalize at 4K
Spin a hundred 1K drafts on Nano banana Pro to lock the concept, then re-run the winner at 4K for production. The default `gemini-3-pro-image-preview` id is tuned for fast iteration; the `-official` id matches Google's direct-routing behavior when an enterprise contract or compliance review needs that guarantee. Same JSON body, same n=4 batches, only the model id differs between Nano banana Pro variants.
Compose product scenes from references
Pass up to 14 references — product cutout, environment plate, brand mood frames — and Nano banana Pro fuses them into one composition. At 4K the texture detail holds up under print zoom; at 2K the file is light enough for ad-network creative pipelines. URLs must be public HTTPS — upload to your own R2 / S3 / OSS first, then pass the URL.
Pricing
Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.
| Category | Unit | Price |
|---|---|---|
| Default | ||
| 1K / 2K | 1 image | $0.053 53 credits |
| 4K | 1 image | $0.058 58 credits |
| Official Google | ||
| 1K / 2K | 1 image | $0.124 124 credits |
| 4K | 1 image | $0.221 221 credits |
Why reAPI
1K to 4K from one endpoint
Nano banana Pro covers the full resolution ladder. Send `gemini-3-pro-image-preview` for the default routing or `gemini-3-pro-image-preview-official` for Google's official endpoint — both hit `/api/v1/images/generations` with the same JSON shape. The resolution field flips between 1K, 2K, and 4K without a refactor; the rest of your client code stays put.
Credits in, image out — no surprises
1 credit equals $0.001 USD. Nano banana Pro at 1K or 2K costs the same per-image rate; 4K is priced higher to match the upstream cell. The estimator on this page costs your exact configuration before submit, so the Nano banana Pro charge in the dashboard equals what you saw at request time. No metering surprises, no minimum commitment, no monthly platform fee.
Async-first for production stacks
Submit a Nano banana Pro task, get a task_id back, poll until done. 4K renders take longer than 1K; the async pattern means your handler never blocks while the model works. Failed and moderated requests are not charged. Drop Nano banana Pro into the same task plumbing you use for every other reApi model — the lifecycle is identical.
Integrate Nano banana Pro in three steps
- step 01
Create an API key
Sign up at reApi and grab a key. Free signup credits cover dozens of Nano banana Pro generations, enough to ship the first 4K hero or campaign asset before topping up.
Open - step 02
Submit a generation
POST to /api/v1/images/generations with model: gemini-3-pro-image-preview, a prompt, and optional size / resolution / n. Nano banana Pro returns a task_id immediately — your handler is free to move on.
Open - step 03
Poll the result
GET /api/v1/tasks/:id until status is completed. The Nano banana Pro response carries image URLs on our CDN, stable for 24 hours; mirror to your own storage if you need them longer.
Open
Frequently asked questions
Common questions about this model.
Nano banana Pro is the community nickname for Google's Gemini 3 Pro Image (formal id: gemini-3-pro-image-preview). It is the higher-fidelity sibling of the original Nano banana — same Gemini family, same OpenAI-compatible endpoint shape on reApi, but with 1K, 2K, and 4K resolution support. Use Nano banana Pro when you need print-grade detail, hero shots, or scaled-up campaign creative.
Related models
Explore more models in the same category.
ImageRecommended
ImageGemini 2.5 Flash Image Preview
Nano banana — fast Gemini image generation and editing, up to 14 reference images at 1K.
From $0.014 per image
ImageImagen 4.0
Imagen 4.0 — Google's text-to-image at a flat per-image rate across five aspect ratios.
From $0.046 per image
ImageMidjourney
Midjourney V7
Midjourney V7 — image generation with Omni Reference, Style Reference, and eleven edit operations, behind one async API.
From $0.044 per request (4 images)
start building
Ready to ship?
Try it in the playground or grab an API key to integrate now.