GPT Image 1.5 vs 
Nano Banana 2
Nano Banana 2 is the newer model, released after GPT Image 1.5.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
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Which answer wins?
Price and specs
| Spec | GPT Image 1.5 | Nano Banana 2 |
|---|---|---|
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | — | No |
| Released | Dec 2025 | Feb 2026 |
Where to run it
GPT Image 1.5
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between GPT Image 1.5 and Nano Banana 2?
GPT Image 1.5 is developed by OpenAI while Nano Banana 2 is developed by Google AI. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.
Which is better, GPT Image 1.5 or Nano Banana 2?
It depends on your use case. GPT Image 1.5 and Nano Banana 2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.
How can I compare GPT Image 1.5 and Nano Banana 2 on Rival?
This page shows a side-by-side comparison of GPT Image 1.5 and Nano Banana 2 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
- GPT Image 1.5 vs Hy Image 3.5 PreviewLanded Oct 2026
- Nano Banana 2 vs FLUX.3 ImageLanded Oct 2026
- GPT Image 1.5 vs Nano Banana 2.1Landed Oct 2026
- Nano Banana 2 vs Recraft V4.1 FlashLanded Sep 2026
- GPT Image 1.5 vs GPT Image 2.5 SunburstLanded Sep 2026
- Nano Banana 2 vs GPT Image 2.5 FlareLanded Sep 2026
- GPT Image 1.5 vs Nano Banana 2 LiteLanded Jun 2026
- Nano Banana 2 vs Riverflow V2.5 FastLanded Jun 2026
Same lab, same size, long tail
- GPT Image 1.5 vs GPT Image 2.5 FlareSame lab
- GPT Image 1.5 vs GPT Image 2Same lab
- Nano Banana 2 vs Nano Banana 2.1Same lab
- Nano Banana 2 vs Nano Banana 2 LiteSame lab
- Nano Banana 2 vs FLUX 2 FlexSame size
- Nano Banana 2 vs FLUX 2 MaxSame size
- Nano Banana 2 vs FLUX 2 ProSame size
- GPT Image 1.5 vs FLUX.3 ImageSame size