Nano Banana 2 vs 
Stable Diffusion XL
Nano Banana 2 is the newer model, released after Stable Diffusion XL.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
Loading the build
Loading the build
Which answer wins?
Price and specs
Not enough votes to call it. On the specs, Nano Banana 2 has the edge: newer, major provider backing. Nano Banana 2 takes Image Generation.
| Spec | Nano Banana 2 | Stable Diffusion XL |
|---|---|---|
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | — |
| Released | Feb 2026 | Jul 2023 |
Where to run it
Stable Diffusion XL
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Nano Banana 2 and Stable Diffusion XL?
Nano Banana 2 is developed by Google AI while Stable Diffusion XL is developed by Stability AI. You can compare their actual outputs across 16 challenges on Rival to see how they differ in practice.
Which is better, Nano Banana 2 or Stable Diffusion XL?
It depends on your use case. Nano Banana 2 and Stable Diffusion XL each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 16 challenges so you can judge which fits your needs best.
How can I compare Nano Banana 2 and Stable Diffusion XL on Rival?
This page shows a side-by-side comparison of Nano Banana 2 and Stable Diffusion XL across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.
More comparisons
Against the newest arrivals
- Nano Banana 2 vs Hy Image 3.5 PreviewLanded Oct 2026
- Stable Diffusion XL vs FLUX.3 ImageLanded Oct 2026
- Nano Banana 2 vs Nano Banana 2.1Landed Oct 2026
- Stable Diffusion XL vs Recraft V4.1 FlashLanded Sep 2026
- Nano Banana 2 vs GPT Image 2.5 SunburstLanded Sep 2026
- Stable Diffusion XL vs GPT Image 2.5 FlareLanded Sep 2026
- Nano Banana 2 vs Nano Banana 2 LiteLanded Jun 2026
- Stable Diffusion XL vs Riverflow V2.5 FastLanded Jun 2026
Same lab, same size, long tail
- Nano Banana 2 vs Imagen 4Same lab
- Nano Banana 2 vs Imagen 3 FastSame lab
- Stable Diffusion XL vs Hy Image 3.5 PreviewSame size
- Stable Diffusion XL vs Nano Banana 2.1Same size
- Nano Banana 2 vs Seedream 4.5Same size
- Nano Banana 2 vs Stable Diffusion 3.5 MediumSame size
- Nano Banana 2 vs Z Image TurboSame size
- Nano Banana 2 vs DALL-E 3Same size
