Grok Imagine vs Nano Banana vs Nano Banana 2
Grok Imagine vs Nano Banana
xAI’s fast photoreal model against Google’s Nano Banana, on the same four prompts.
Updated
Grok Imagine vs Nano Banana pits xAI’s image model, built on its Aurora engine, against Google’s Gemini image family. Both are fast and photorealistic and both edit photos, so the differences come down to style, literalness and resolution. We ran the same four prompts through Grok Imagine, Nano Banana and Nano Banana 2.
Short answer
Grok Imagine makes the most dramatic, moody photos and is one of the fastest models we host, at the same price as the original Nano Banana. Nano Banana followed our product brief more literally, and Nano Banana 2 adds better text and up to 4K. Pick Grok Imagine for striking 1K photography, Nano Banana 2 for edits and larger images.
Grok Imagine vs Nano Banana: the verdict
| Criterion | Our pick | Why |
|---|---|---|
| Dramatic photorealism | Grok Imagine | Low-key light, dark backgrounds and tight crops give its photos a moody, editorial feel. |
| Following a product brief | Nano Banana | Both Nano Banana models made a recognizable perfume bottle; Grok’s looked more like fruit with a cap. |
| Price | Tie: Grok Imagine and Nano Banana | Both cost 20 credits per image here; Nano Banana 2 costs 40 at 1K. |
| Resolution | Nano Banana 2 | Up to 4K. Grok Imagine and the original Nano Banana produce 1K images here. |
| Clean 3D lettering | Grok Imagine | Its extruded NANO BANANA letters were the cleanest; Nano Banana 2 added an extra tagline. |
Same prompts, side by side
Each row uses one prompt, run once on each model on our own account. The images are unedited; the note under each row says what we saw.
Prompt: “Photorealistic close-up portrait of a young woman with light freckles and natural curly hair, soft window light, shallow depth of field, 85mm lens, high detail”
Grok Imagine produced the most dramatic portrait: low-key light, dark background and a tight crop. Nano Banana and Nano Banana 2 chose bright window light.
Prompt: “Professional studio product photograph of a glossy yellow banana-shaped perfume bottle on a white marble surface, soft gradient background, clean commercial lighting”
Grok Imagine made a banana with a black cap that reads more like fruit than a perfume bottle. Both Nano Banana models made a recognizable banana-shaped bottle.
Prompt: “Bold playful poster with large 3D text reading 'NANO BANANA' in bright yellow letters on a dark background, confetti, soft glow, modern typography, high quality”
All three spelled the words correctly. Grok Imagine’s extruded 3D letters were the cleanest; Nano Banana 2 added a tagline nobody asked for.
Prompt: “Cinematic fantasy landscape at golden hour, floating islands above a misty valley, dramatic volumetric clouds, ultra detailed, wide establishing shot”
Grok Imagine went darker and mistier; the Nano Banana models went warmer and brighter.
Specs compared
| Grok Imagine | Nano Banana | Nano Banana 2 | |
|---|---|---|---|
| Engine | xAI Aurora | Gemini 2.5 Flash Image | Gemini 3.1 Flash Image |
| Developer | xAI | Google DeepMind | Google DeepMind |
| Engine type | Autoregressive mixture-of-experts | Gemini multimodal | Gemini multimodal |
| Known for | Speed, moody photorealism | Edits that keep faces | Text, consistency, 4K |
| Credits per image on Nano Banana AI | 20 credits at 1K | 20 credits at 1K | 40 credits at 1K, 60 credits at 2K, 90 credits at 4K |
| Max resolution here | 1K | 1K | 4K |
| Reference images here | Up to 4 | Up to 4 | Up to 4 |
| Included from | Standard plan | Standard plan | Premium plan |
How Grok Imagine and Nano Banana differ
Grok Imagine runs on xAI’s Aurora engine, which predicts an image token by token instead of denoising like a diffusion model. Its reputation is speed and photorealism: skin texture, product surfaces and signage look camera-made.
Nano Banana and Nano Banana 2 are Gemini models that understand both text and images, which is why they are so good at editing a photo while keeping the person recognizable. Nano Banana 2 adds stronger text and outputs up to 4K.
Which one to use
- Moody portraits, street and product photography at 1K: Grok Imagine.
- Fast, cheap everyday images: Grok Imagine or the original Nano Banana, both at 20 credits.
- Editing your own photos, text in images, 2K or 4K: Nano Banana 2.
Grok Imagine and Nano Banana are included from the Standard plan, Nano Banana 2 from the Premium plan. You do not need X Premium to use Grok Imagine here.
Grok Imagine vs Nano Banana FAQ
Is Grok Imagine better than Nano Banana?
For dramatic, moody photorealism, often yes. Nano Banana follows briefs more literally and is better at editing photos, and Nano Banana 2 adds 4K and stronger text.
Which is faster, Grok Imagine or Nano Banana?
Both are fast. Grok Imagine is one of the quickest models we host, typically finishing in seconds.
Do I need X Premium to use Grok Imagine?
Not on Nano Banana AI. Grok Imagine is included from the Standard plan at 20 credits per image.
Can both edit photos?
Yes. Both accept reference images (up to 4 here) and edit from plain instructions.