Nano Banana Pro is Google DeepMind's Gemini 3 Pro Image model for creating and editing images through hosted Google services. In the Gemini app, eligible paid subscribers access it through Redo with Pro after generating an image with Nano Banana 2 or Nano Banana 2 Lite. Google provides no open weights for local inference. Model identity, Gemini app instructions, and developer access.
What are the key facts about Nano Banana Pro online?
| Developer | Released | Type | Size or parameters | License and access | Where it runs |
|---|---|---|---|---|---|
| Google DeepMind. Launch | November 20, 2025. Launch | Image generation and editing. Model page | Not published in the model documentation. Model page | Hosted service with no open weights; Gemini app eligibility and developer API terms apply to their respective access routes. App help, developer access, and API terms | Google-hosted products, including Gemini, AI Studio, and the Gemini API. App help and developer access |
Choose the interface according to your task. Use Gemini for a manual image session. Use Google's developer services when an application needs to select the model explicitly and store requests. The browser steps below focus on reaching Pro in Gemini; the sibling Nano Banana Pro API guide covers programmatic access.
How do you use Nano Banana Pro in the Gemini app?
On a computer, sign in at Gemini, open the sidebar, and select Images. Choose a template or enter a prompt to create the initial image. Google's current help identifies Nano Banana 2 as the model used by this image-creation flow. Image-generation instructions.
For Pro, use an eligible Google AI plan with Gemini's model set to Pro. Create an image with Nano Banana 2 or Nano Banana 2 Lite, then open More at the bottom right of the result and choose Redo with Pro. Selecting the Gemini Pro model alone does not mean that the initial image was generated by Nano Banana Pro. Model selection and Pro regeneration.
Try this original prompt as a small access test:
Create a poster for a ceramics exhibition. Include the exact headline CLAY FORMS. Show a single blue vase below the headline on a pale background, with empty space at the bottom for event details.
Keep the first image and its Pro regeneration for comparison. Check the headline, the vase, and the empty space separately. Decide whether the Pro result improves the aspects that matter to this particular brief before using it in a finished layout.
Google also documents editing an image from Library: open the image, select Chat, and enter the edit instruction. You can upload a reference instead. For the Pro version of a result, follow the separate regeneration flow above. Editing instructions.
To save a result, hover over it and select Download full size. Review the downloaded file before handing it to a designer or placing it in a page. Keep the accepted image beside the prompt so a later revision starts from the same requirements. Download instructions.
What can Nano Banana Pro help you create?
Google documents Pro for text in images, compositions built from visual references, and controls over lighting and camera treatment. Its examples include product mockups and designs incorporating existing brand assets. Treat those capabilities as reasons to test a representative task. Developer examples.
For a product mockup, prepare the product reference and identify the features that must remain recognizable. For a poster, approve the written copy before generation. For a diagram, prepare the information that the visual needs to communicate. These briefs give you something concrete to check after downloading the image.
Keep layout requirements explicit. If the finished page needs a heading above the illustration, request suitable empty space and inspect that area in the result. If the picture must support a particular message, review the subject and composition against that message before judging decorative details.
The sibling Nano Banana Pro prompting guide develops this approach for reference-image edits.
Why might Redo with Pro be unavailable?
Google's help requires a paid subscription for Pro regeneration and describes the relevant Gemini model selection. It also states that reaching the daily Nano Banana 2 image quota prevents additional Pro regenerations. Check those conditions when the option is missing. Pro access requirements.
Account eligibility is separate from image quality. Google lists small-text errors, spelling problems, inaccurate factual visuals, imperfect translations, and artifacts in complex edits among Pro's remaining limitations. A visible result still needs review against the brief. Published limitations.
When reviewing the poster example, inspect every letter in the headline before approving the composition. For a reference-image edit, compare essential product details with the original. Write down the failed requirement so the next request addresses a specific problem.
How do Gemini app access and API pricing differ?
Gemini's Pro regeneration depends on app subscription eligibility. Gemini Developer API usage is billed through a Google Cloud project and its billing account. Check the access product and the billing arrangement together before planning repeated generation. App eligibility and API billing.
Google's Standard Developer API pricing, checked September 5, 2026, lists these USD image-output charges for Nano Banana Pro:
| Output tier | Listed image-output charge |
|---|---|
| 1K or 2K | $0.134 per image. Pricing |
| 4K | $0.24 per image. Pricing |
These amounts exclude input charges and other applicable usage. They are API output prices, not Gemini app subscription prices or a guaranteed total request cost. Google's Pro pricing entry lists no free API tier. Complete Pro pricing entry.
For a developer project, create its key in AI Studio and review its billing status before making requests. Google's billing guide explains how API keys inherit their project's billing settings. Keep the app subscription and developer project identifiable in your budget records. Key setup and project billing.
What else should you know about Nano Banana Pro online?
Does selecting Pro in Gemini immediately use Nano Banana Pro for images?
Google's help says initial image requests with Gemini set to Flash or Pro use Nano Banana 2. Eligible paid users can then choose Redo with Pro to regenerate with Nano Banana Pro. Model-selection instructions.
Can I use Nano Banana Pro online without installing a model?
Yes: Google documents access through the Gemini app and hosted developer services. No open weights are supplied for installing Pro as a local image checkpoint. App access and developer access.
Is a Pro API image price the whole cost?
No: the listed image-output charge is one part of a Gemini Developer API request. Include input charges and any other enabled billable features when estimating usage. Pricing.
How do I download an image from Gemini?
On a computer, hover over the generated image and select Download full size. Inspect the saved file before using it in your project. Download instructions.
Sources
Primary sources checked on September 5, 2026.
- Google model documentation for Gemini 3 Pro Image
- Google announcement of Nano Banana Pro
- Google developer announcement of Nano Banana Pro
- Google Gemini app
- Google help for image creation, editing, and Pro regeneration
- Google Nano Banana Pro prompting guidance and limitations
- Google Gemini API terms
- Google Gemini Developer API pricing
- Google Gemini API billing documentation
- Google API-key setup
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