Nano Banana Pro for Hermes Agent: Make Final Images
Save Nano Banana Pro for images you are ready to publish. Do not use it for every rough draft. First use a lower-cost model to test the layout, text position, and style. Pick a direction, then use Pro for a product hero image, final ad, poster, or video keyframe. Hermes Agent organizes your material and requirements. Pro makes the image. Before publishing, a person checks the logo, small text, and price.
Nano Banana Pro model-page visual; API model ID: gemini-3-pro-image.
AT A GLANCE
It costs more, so save it for final images with higher quality requirements.
OFFICIAL MODEL ID
gemini-3-pro-image
HERMES TEXT-TO-IMAGE PRICE
$0.10 / successful task
HERMES IMAGE EDIT
up to 10 images
TASK TYPE
asynchronous job
ITS HERMES ROLE
Write a clear job before asking the model to make an image.
First, give Hermes your product facts, brand colors, image size, and details that must not change. Hermes turns them into a short image checklist. Nano Banana Pro then makes or edits the image. This makes mistakes easier to spot.
CHOOSE THE RIGHT ENTRY
Generate when you have no reference. Edit when you already have an asset.
01
Generate from text
Use this when you have product benefits, brand rules, and an image idea, but no finished image. Let Hermes write a clear image checklist, then call Nano Banana Pro text to image.
Use this when you already have a product photo, package shot, design file, or character reference. Upload the references and say what must stay the same and what may change.
Use text to image when you have a brief only. Use reference-image editing when you already have an asset.
TASK FIT
When is Nano Banana Pro worth using?
Good fit
Final product hero images, complex ad creative, edits that need to keep details from a reference image, 2K or 4K assets, and scenes that need several elements to stay consistent.
Do not start here
Bulk drafts, simple color changes, low-risk social tests, and many variations. Start with a faster, lower-cost image model and save only the best ideas for refinement.
Always review
Small package text, prices, discounts, data charts, maps, medical content, or legal content. The model can prepare an option. It cannot confirm that these details are correct.
SKETCH FIRST, REFINE LATER
Put a lower-cost model and Pro in one workflow. Do not treat them as an either-or choice.
The real question is not “which model is best?” It is how to deliver an image that is ready to publish without spending too much. These three steps separate exploration cost from final-image quality.
Round one: make quick drafts
Use a faster, lower-cost image model for several directions. At this stage, check only the composition, whether the product benefit is clear, whether there is enough empty space, and whether the ratio fits the channel. Do not chase perfect small text or package detail yet.
Round two: keep only a few options
Let Hermes compare the drafts with the original brief. Keep one to three directions that are close to the goal. Turn each change into a clear job, such as “keep the bottle shape, change the background to light gray, and leave space for a headline on the right.”
Round three: use Pro for final work
Send only the selected brief or reference images to Nano Banana Pro. Its cost then goes toward final assets, difficult reference-image edits, and 2K or 4K delivery instead of lots of trial and error.
A HERMES WORKFLOW
Example: turn one product brief into an ad image a person can check.
This is a practical Hermes workflow example, not a result the model guarantees. The key is to separate writing the requirements, making the image, checking the image, and publishing it.
01
Collect the inputs
Give Hermes the product image, product benefits, brand colors, target channel ratio, forbidden elements, and any package detail that must not change.
02
Write the image checklist
Hermes turns your request into a short checklist: subject, scene, lighting, image ratio, where text goes, and what must not change.
03
Call Nano Banana Pro
Use text to image when there is no reference. Use the edit model when you have a product image or design file. Generate a small set of candidates first, not a large batch of final images.
04
Check before publishing
A checking Agent compares the result with the brief for ratio, product shape, and obvious mistakes. A person confirms the logo, small text, price, and public-facing content before publishing.
The Agent finds obvious issues first. A person decides on logos, small text, prices, and publication.
TWO WORKFLOW EXAMPLES
Let Hermes manage the job. Let each model handle the stage it is good at.
Neither role asks Pro to do every job from the first sketch. Hermes Agent connects the inputs, selection, and review. Nano Banana Pro receives only the small number of high-value final tasks.
CASE 01 · FIGURINE DESIGNER
Turn character sketches into a product visual that is ready for a store listing.
Maya is designing a resin figurine. She gives Hermes the character notes, front and side sketches, accessory list, approved colours, and the aspect ratio for the store hero image. Hermes turns them into one clear image brief. Nano Banana 2 makes six to eight fast composition sketches, and Maya keeps only two directions. She then gives Nano Banana Pro the selected sketch, material references, and clear instructions: keep the silhouette, accessory count, and eye shape; make the resin and fabric feel real; leave room for listing copy on the right. Hermes checks the result against the brief. Maya still approves the small details, accessories, and brand content before it goes live.
CASE 02 · ECOMMERCE OPERATOR
Turn existing product photos into final ad creative for paid campaigns.
Nina runs creative for a skincare brand. She already has a white-background bottle photo, packaging-detail shots, and a page of product benefits. Hermes extracts the bottle proportions, package text, and brand colours that cannot change, then writes separate jobs for 1:1, 4:5, and 9:16 assets. A lower-cost image model explores background and composition. After Nina chooses a direction, Nano Banana Pro edits the original product photo using the selected draft: the bottle stays the same while the lighting and setting become campaign-ready. Hermes compares the result with the original inputs. Nina checks price, logo, ingredient text, and ratio before handing it to the media team.
NANO BANANA PRO API PRICING
Hermes currently lists text to image at $0.10 per successful task.
That means two final image candidates cost about $0.20 through Nano Banana Pro text to image, and five cost about $0.50. Failed tasks are not charged. Its value is not that every image is cheap. Its value is using it only when rework on a final image would cost more. For reference-image editing, open the edit model page and use the live price shown there.
A product hero image
Use a lower-cost model to test ten compositions. Keep two directions, then create two final candidates with Nano Banana Pro. The Pro text-to-image portion is about $0.20.
Ad creative
Use rough drafts to confirm whether a 1:1, 4:5, or 9:16 layout can hold the title and product. Then use Pro for the higher-care version. You avoid paying premium-model cost for the wrong direction.
An existing design
When you already have a product image or design file, use the reference-image editor. Upload the images, state what must stay and what may change, then check the current price on that model page before submitting.
A model page is not enough. You also need a Hermes API key.
The link below lets a new user create an API key. Existing users can view, copy, manage, or revoke a key in the same place. The same key works for text to image and reference-image editing.
Choose by delivery risk and quality requirements, not only by which model is newest.
Bulk work and speed
Start with a lower-cost image model. It is better for many drafts and first-round tests.
Final asset and complex editing
Choose Nano Banana Pro when the product hero, reference edit, or high-resolution delivery needs more careful control.
Compare before deciding
If you are choosing among Nano Banana Pro, Nano Banana 2.1, Midjourney, GPT Image, or Seedream, run a small set of the same brief through each model. Compare against the delivery standard you actually need.
PROMPT STRUCTURE
Do not ask only for “a good-looking image.”
Let Hermes put the image requirements into a fixed order. You will keep the important conditions when you change models, resize the output, or hand the work to someone else.
Goal
What you are selling, who should see it, and where the image will appear.
Details that cannot change
Product shape, logo, package text, brand colors, and price.
Role of each reference
Which image defines the product, which defines the style, and which is only for inspiration.
Scene and output
Aspect ratio, camera, lighting, background, empty space, resolution, and the location of on-image text.
LIMITS TO PLAN FOR
It can look real. That does not mean it is right every time.
Nano Banana Pro is strong at complex composition, reference-image editing, and on-image text. Small text, long paragraphs, factual infographics, character consistency, and spatial direction can still be wrong. Do not let an Agent automatically publish an image to a product page, ad account, or public channel.
FAQ
Answer these questions before you call the model.
Is Nano Banana Pro free?
Google does not list a free API tier for Nano Banana Pro. Hermes is a pay-per-successful-task API. Check the current task price on the text-to-image or image-edit model page. Do not treat a free credit or a promotion in another app as the Hermes API price.
What is the difference between the Nano Banana Pro official site and Hermes?
Nano Banana Pro is Google’s model name. Its official API ID is gemini-3-pro-image. Hermes is a third-party API service with model pages that let you submit and check image tasks. Hermes is not a Google official site.
Should I use Nano Banana Pro or Nano Banana 2.1?
For lots of experiments, choose a lower-cost model first. Send only a small number of tasks to Nano Banana Pro when a final image needs more careful composition, reference editing, or high-resolution delivery.
Can Nano Banana Pro make product images directly?
It can generate or edit a product image. It cannot guarantee that package text, prices, logos, or the product shape are correct. Put those details in the brief and have a person check them before publishing.
