How to Use Nano Banana 2: Online Guide

Here's how to use Nano Banana 2 in SynthPulse: open the Image studio, choose text input or references, set the aspect ratio and output size, then generate. Check the quoted credit total first and review the image before downloading. For revisions, change one prompt instruction at a time.

Credit figures reflect the SynthPulse configuration reviewed on October 23, 2026, not official vendor subscription or API prices. Check the live generation quote before submitting.

Open the Image studio to follow these steps.

How to use Nano Banana 2: choose a version

The model picker lists three versions. Their base costs per finished image differ:

• Nano Banana (original): 10 credits, 1K only. The drafting model.
• Nano Banana 2: 20 credits at 1K, 30 at 2K. The default.
• Nano Banana Pro: 45 credits, and the price does not change with resolution.

Nano Banana 2 charges a 50% premium for 2K; Nano Banana Pro charges one flat rate. So the gap between a 2K Nano Banana 2 image (30) and a Nano Banana Pro image (45) is 15 credits, not the 25 you would guess from the headline prices.

Five settings to check

1. Direction. Text-to-image, or image-to-image with references attached. Nano Banana 2 does both, and they cost exactly the same; starting from a frame you already like never costs extra here.

2. Reference images. Up to ten per prompt in this studio on both Nano Banana 2 and Nano Banana Pro. That is a SynthPulse input limit, not the full Gemini API allowance. Ten slots is enough to hand the model a character sheet, a background plate, a product shot and a style reference in one submission.

3. Resolution. 1K or 2K. 1K is the base tier and what the 20-credit price buys; 2K costs 30. Draft at 1K, request a 2K version after settling the composition; a re-run can change details.

4. Aspect ratio. 1:1, 16:9, 9:16, 4:3 or 3:4; no price difference between them. Pick it before you write the prompt, so the framing instructions match the canvas.

5. Quantity. One, two or four images per submission. Each one is charged at full price, so four 1K images is 80 credits, not a bulk rate. Choose four when you want alternatives and have budgeted for them; one costs less when testing an uncertain instruction.

Read the total on the generate button after changing settings. It includes the selected quantity; prompt assistance adds its own charge when enabled.

When to use prompt assistance

There is an AI enhance toggle next to the prompt box. It sends your prompt to a chat model that expands it into a fuller description before generation, and it costs 1 credit.

Try it when you have a one-line idea and want help adding detail. Leave it off when your wording is already precise. Check the expanded prompt shown after submission for instructions you would change next time.

A first run

1. Open the Image studio and pick Nano Banana 2 from the model list.
2. Choose text-to-image or attach references.
3. Write one paragraph; subject, framing, light, medium, then what you do not want.
4. Set aspect ratio and 1K.
5. Start with quantity 1; choose more when you need alternatives.
6. Read the credit total on the button, then generate.
7. Results appear beside the form as they land, and stay in your Library.

If generation fails, check the task status and refund feedback before retrying. A completed image you dislike is still a completed task.

Two prompt examples

Text-to-image, with text in the frame. Quote the exact lettering and say where it should sit. This coffee-bag prompt is a starting point to adapt:

A matte navy coffee bag standing on a pale concrete surface, three-quarter view, 50mm, soft window light from the left with one soft shadow. The label reads "MORNING ORDER" in a wide sans-serif, centered, upper third of the bag, with "single origin · ethiopia" in small caps beneath it. Clean studio background, no props, no reflections on the bag, no extra text anywhere in the frame.

Image-to-image, keeping one thing fixed. Say what to preserve as well as what to replace. The model can still alter details, so compare the result with your source:

Keep the product in the reference image exactly as it is — same label, same shape, same proportions. Replace the background with a sunlit kitchen counter, shallow depth of field, warm morning light from the right. Do not alter the product, its colour, or the text on it.

Is Nano Banana 2 free?

Nano Banana 2 generations on SynthPulse consume credits: the configuration reviewed for this guide lists 20 credits at 1K and 30 at 2K. Check the live quote before submitting. Eligible new accounts may receive limited signup credits under the current offer; the balance must cover the request. This is not unlimited free generation. See Pricing for current ways to add credits.

Is there a Nano Banana 2 API?

SynthPulse provides the creation interface, not a public generation API. For programmatic access, see Google's Gemini API model documentation. You do not need your own API key to use the studio.

Budget for a model comparison

For twenty draft variations, the original model would cost 200 credits at the listed rate, compared with 400 for Nano Banana 2 at 1K. Choose a small comparison first if label accuracy or reference fidelity matters more than volume. A higher price alone does not prove that a result will survive printing or close inspection.

GPT Image 2 is another available option at 15 credits for its base settings. We have not run a head-to-head lettering test; compare the same brief at the size where you will use the result.

Final checks

• Are you at 1K? 20 credits a try instead of 30.
• Is the aspect ratio set to match the composition you are describing?
• If you have references attached, did you say what must not change?
• If there is text in the image, is it in quotes with a stated position?
• Does the quantity fit your budget? One image is enough to test a new instruction.

Give each reference image a job

Start by giving each attachment one job. Image one can define the product; image two can suggest a background; image three can supply a palette. State that division in the prompt rather than asking the model to combine everything. Remove a reference that conflicts with your intended subject. More inputs do not automatically produce a more faithful edit.

For example: “Use image one for the bottle shape and label. Use image two only for the stone surface and light direction. Keep the bottle upright and centered. Do not borrow objects or lettering from image two.” This is a suggested instruction, not a verified example output. Inspect the generated label against the original before treating it as product photography.

Adjust the composition for another aspect ratio

Changing from a square to a vertical image is a new composition problem. Leave room above a person's head, keep the important product edges inside the frame and specify which side needs empty space for later text. The aspect-ratio control sets the canvas; the prompt explains how to use it. Re-running at a larger size generates another image and may change details, so it is not a guaranteed identical upscale.

Revise a result that misses the brief

Separate three cases. If the request fails, follow its task status and refund feedback. If it succeeds but the composition is wrong, shorten the brief and change one instruction. If only a small exact detail is wrong, consider a conventional image editor rather than repeatedly regenerating the whole frame. A successful image that you dislike is still a completed generation.

Check the image before publishing

Review the full image and a close crop. Check faces, hands, label spelling, repeated objects and edges around the reference subject. View it in the actual poster or social-post layout too: details that look clear in a full-screen preview can become unreadable at delivery size. Download the selected result and keep the prompt, references and settings together so the next revision starts from a useful record.

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More on the model and its full price table: Nano Banana on SynthPulse. Ready-made prompts: Nano Banana 2 prompts. Or just open the Image studio; and if the still is headed for a video, the Video studio draws on the same balance.