Nano Banana 2: What It Is and How to Use It for Image Editing

Nano Banana 2 is an AI image model you reach through third-party creative workspaces rather than an official Google site. If you want prompt-driven image editing, consistent characters across multiple generations, or reference-guided image creation, you can use it inside a multi-model platform like HeyMarmot, which bundles it with video and music tools. The practical catch: you get free starter credits when you sign up, but continued use is paid, so the model is best suited to people who will generate images regularly enough to justify topping up.

What Nano Banana 2 actually is

Nano Banana 2 is an image generation and editing model. You describe what you want in text, optionally attach a reference image, and the model produces or modifies a visual.

The important distinction is where you access it. HeyMarmot describes itself as an "all-in-one AI creative assistant" that integrates top-tier AI models — it is a third-party workspace, not Google's own product page. That matters for two reasons:

• Feature availability depends on the host. The workspace decides which parameters you can adjust, how references are handled, and how credits are counted.
• Pricing and access live with the host, not the model. Free credits on sign-up and paid subsequent usage are HeyMarmot's terms, not a universal rule for the model.

If you see "Nano Banana 2" advertised elsewhere, check whether that site is the model's official home or another workspace wrapping it.

Core use cases

Prompt-driven image generation

You write a description and get a finished image. HeyMarmot's image tool also lets you upload a reference image to guide the output when text alone isn't precise enough — useful for matching a color palette, composition style, or scene detail you already have in mind.

Image editing

Editing here means transforming an existing image through instructions rather than manual pixel work. The reference-image path is the key mechanism: instead of describing everything from scratch, you supply the visual context and let the model work within it. This is faster for tasks like restyling a photo, adjusting tone, or reworking a composition while keeping the subject recognizable.

Character consistency

Character consistency is the harder problem, and it's where reference images do the most work. The goal is to keep the same character looking like themselves across multiple generations — same face structure, hair, clothing, and overall vibe — instead of getting a slightly different person each time.

The approach that works: build a small set of reference images of your character, then reuse them as input on every new generation rather than relying on a text description alone. Text descriptions drift; visual references anchor.

How to get started

1. Create an account. HeyMarmot offers free credits on sign-up, which is enough to test the image tool before committing.
2. Open the AI image creation tool. You can start from text alone or upload a reference image.
3. Write your prompt or attach your reference. For editing and consistency work, attach the reference first, then describe the change you want.
4. Generate and inspect. Check whether the output matches your intent — especially character features if consistency is the goal.
5. Iterate. Adjust the prompt or swap the reference and regenerate. Each run consumes credits.
6. Move to paid usage when free credits run out. Continued generation is a paid feature; check the pricing page for current terms before you rely on it for ongoing work.

Prompt tips for editing and consistency

For editing:

• State what should change and what should stay the same. "Change the background to a rainy street at night, keep the subject's pose and clothing unchanged" gives the model a clear boundary.
• Use the reference image for anything visual that's hard to put into words — lighting, texture, framing.
• Make one meaningful change per generation when precision matters. Stacking five edits in one prompt makes it hard to tell what went wrong.

For character consistency:

• Keep a fixed reference set for each character and reuse it every time.
• Describe only the variable parts in your prompt — scene, action, expression — and let the reference carry identity.
• If the character drifts, compare outputs against your reference set and re-anchor rather than piling on more description.

Evaluating credit cost and tool fit

Credits are the real constraint. Before committing to a workflow, ask:

Choose Nano Banana 2 through a workspace like HeyMarmot if you want image editing, character consistency, and reference-guided generation in one place alongside video and music tools. If you only need occasional one-off images, the free starter credits may cover you — but plan for paid usage if generation becomes part of your regular workflow.