Nano Banana Pro vs Imagen
A practical comparison of two image models: what each does best, what it costs, and how they differ on the same prompts.
Quick verdict
Google’s Gemini 3 Pro Image: photoreal scenes with world knowledge, up to 4K.
Choose Nano Banana Pro for
- Photoreal lifestyle and portrait images
- Image editing and multi-reference compositing
- Infographics that need factual detail
Google’s dedicated text-to-image model family.
Choose Imagen for
- API-based image pipelines
Specs side by side
| Spec | Nano Banana Pro | Imagen |
|---|---|---|
| Developer | ||
| Type | image | image |
| Where to use it | AiLoft web app, Gemini app, Gemini API / Vertex AI | Gemini API and Vertex AI |
| Price | 10 credits / image | Per-image API pricing. |
| Open weights | No | No |
| Resolutions | 1K · 2K · 4K | — |
| Aspect ratios | 1:1 · 2:3 · 3:2 · 3:4 · 4:3 · 9:16 · 16:9 | — |
| Reference / start images | Yes | — |
| Transparent background | No | — |
Same prompt, side by side
Imagen isn’t on AiLoft, but you can run these prompts on Nano Banana Pro and compare with your own Imagen results.
Text rendering
What it testsSpelling, kerning and layout of a multi-line headline.
A minimalist concert poster for a jazz night called "BLUE HOUR SESSIONS", date "FRI 14 NOV", deep navy background, a single brass trumpet lit by a warm spotlight, Swiss-style typography, generous negative space
Photorealism
What it testsSkin texture, natural light and believable depth of field.
Candid street portrait of an elderly fisherman mending a net at golden hour, weathered skin, salt in his beard, harbor bokeh behind him, shot on 85mm f/1.8, natural color grading
Product shot
What it testsMaterials, reflections and clean e-commerce lighting.
Premium product photo of a frosted glass perfume bottle with a brushed gold cap on a travertine plinth, soft window light from the left, subtle shadow, beige seamless backdrop, 1:1
Complex scene
What it testsCounting objects and placing many elements correctly.
Isometric illustration of a tiny cozy bookshop: three shelves, a sleeping orange cat on the counter, a red bicycle outside the door, two customers reading, warm evening lights, pastel palette
Strengths and limitations
Nano Banana Pro
- Photorealism with accurate lighting and materials
- Blends up to several reference images into one scene
- Keeps characters consistent across edits
- Flat price for 1K, 2K and 4K output
- No transparent background output
- Fewer aspect ratios than GPT Image 2.5
- Slower than Nano Banana 2 on simple prompts
Imagen
- Fine detail in single-shot generation
- Enterprise access via Vertex AI
- Developer-focused access
- Less suited to iterative editing than Nano Banana
Real examples
FAQ
Is Nano Banana Pro better than Imagen?
Neither wins everywhere. Nano Banana Pro’s standout strength: photorealism with accurate lighting and materials. Imagen’s standout strength: fine detail in single-shot generation. The quickest way to decide is to run your own prompt on both.
Which is cheaper, Nano Banana Pro or Imagen?
Nano Banana Pro: 10 credits / image Imagen: Per-image API pricing.
Can I use Nano Banana Pro and Imagen in one place?
Nano Banana Pro is available on AiLoft, where you can compare it against other models in one click. Imagen has to be used through: Gemini API and Vertex AI.
Are Nano Banana Pro and Imagen open source?
Nano Banana Pro is closed. Imagen is closed.
Stop guessing — compare on your own prompt
Pick up to 4 image models (or 3 video models), write one prompt, and see every result side by side.