Model comparison

Nano Banana Pro vs GPT Image 2, with receipts

Google's Nano Banana Pro and OpenAI's GPT Image 2 are the two state-of-the-art image models right now, and every comparison you read seems to declare a different winner. So instead of opinions, this page shows outputs: we ran the exact same prompts through both models on renza and put the results side by side, untouched.

Spoiler: Nano Banana Pro is the better photorealist and multi-image editor; GPT Image 2 follows complicated instructions more literally and is a touch cheaper. Scroll down and judge the pixels yourself.

Run your prompt on both models → Skip to the verdict

Nano Banana Pro vs GPT Image 2 at a glance

	Nano Banana Pro	GPT Image 2
Made by	Google	OpenAI
Photorealism	Best in class, natural skin and light	Very good, slightly “rendered” look
Text in images	Excellent	Excellent
Instruction following	Very good	Best in class on complex prompts
Editing (image + prompt)	Best for multi-image and consistency	Strong, occasionally over-edits
Reference images	Up to 14 in one edit	Multiple
Cost in renza	4 credits	3 credits

Same prompt, both models

Every pair below was generated on renza with the identical prompt, no cherry-picking beyond one run per model. Left: Nano Banana Pro. Right: GPT Image 2.

Photorealistic portrait

“candid photo of a woman in her 30s laughing at an outdoor cafe table, golden hour sunlight, shallow depth of field, natural skin texture, photorealistic”

Photorealistic portrait generated by GPT Image 2 — GPT Image 2

Look at skin texture and how the golden-hour light wraps the face. This axis is where Nano Banana Pro usually pulls ahead.

Typography and layout

“vintage-style poster for a coffee shop named 'Morning Ritual', with the slogan 'Slow down. Sip. Repeat.' in elegant serif type, cream and brown palette”

Typography and layout generated by GPT Image 2 — GPT Image 2

Both models render real, legible type — a problem that was unsolved a year ago. Judge the layout taste and letter spacing.

Product photography

“studio product photo of matte black wireless headphones on a stone pedestal, dramatic side lighting, dark background, high-end advertising photography”

Product photography generated by GPT Image 2 — GPT Image 2

Materials and controlled studio lighting: matte plastic should absorb light, stone should keep its grain.

Flat illustration

“flat vector illustration of a fox reading a book under a tree, warm autumn palette, clean shapes, children's book style”

Flat illustration generated by GPT Image 2 — GPT Image 2

Style discipline: staying genuinely flat, no sneaky gradients or 3D shading.

The hands test

“close-up photo of two hands kneading bread dough on a floured wooden table, morning window light, photorealistic”

The hands test generated by GPT Image 2 — GPT Image 2

The classic AI failure case. Count fingers, check knuckles, look at how dough deforms under pressure.

Editing: same photo, same instruction

Generation is half the story. Below, both models edit the same source image with the same instruction.

Background swap

“replace the background with a vibrant sunset beach with palm trees and golden hour lighting”

Original image before editing — Original

Edit by Nano Banana Pro — Nano Banana Pro

Add an element

“add a tall floor-to-ceiling stone fireplace with a roaring warm fire to the wall behind the sofa”

The verdict

Pick Nano Banana Pro when…

✓Photorealistic people: skin, hair and natural light look the most believable.
✓Multi-image editing: it accepts up to 14 reference images, ideal for keeping a character or product consistent across a whole set.
✓High-resolution finals and professional lighting control.

Pick GPT Image 2 when…

✓Long, multi-clause prompts: it executes step-by-step instructions the most literally.
✓Structured graphics: diagrams, UI mockups, text-heavy marketing assets.
✓Slightly cheaper per image, which adds up on drafts.

Draft with GPT Image 2, finish with Nano Banana Pro is a workflow many pros have settled on. In renza both are one dropdown apart, so you can stop choosing a lab and start choosing per image.

Stop choosing a lab. Choose per image.

renza runs Nano Banana Pro, GPT Image 2 and more behind one prompt box, one account, one credit balance. Run your prompt on both and keep the winner.

Frequently asked questions

Is Nano Banana Pro better than GPT Image 2?

For photorealism and multi-image editing, yes. For literal execution of complex instructions and structured graphics, GPT Image 2 has the edge. Our side-by-side outputs above show both on identical prompts so you can judge directly.

What is Nano Banana Pro exactly?

Nano Banana Pro is Google's state-of-the-art image generation and editing model, the successor to the original Nano Banana that went viral. It excels at realistic people, consistent characters and using many reference images at once.

Can I use both without ChatGPT Plus and Gemini subscriptions?

Yes. renza runs both models through one account and one credit balance. Generate with each, compare, and keep the winner.

Which is better for editing an existing photo?

Both edit from an image plus an instruction. Nano Banana Pro preserves identity and untouched regions better across multiple edit rounds; GPT Image 2 sometimes re-renders more of the image than asked.