Nano Banana Pro vs 
Riverflow V2.5 Fast
Riverflow V2.5 Fast is the newer model, released after Nano Banana Pro.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
Loading the build
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Which answer wins?
Price and specs
| Spec | Nano Banana Pro | Riverflow V2.5 Fast |
|---|---|---|
| Input price | — | Free |
| Output price | — | Free |
| Context window | — | 8K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Nov 2025 | Jun 2026 |
| At 10M a month | not listed | $0 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Riverflow V2.5 Fast1 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Oct 2026.
Common questions
What is the difference between Nano Banana Pro and Riverflow V2.5 Fast?
Nano Banana Pro is developed by Google AI while Riverflow V2.5 Fast is developed by Sourceful. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.
Which is better, Nano Banana Pro or Riverflow V2.5 Fast?
It depends on your use case. Nano Banana Pro and Riverflow V2.5 Fast each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.
How can I compare Nano Banana Pro and Riverflow V2.5 Fast on Rival?
This page shows a side-by-side comparison of Nano Banana Pro and Riverflow V2.5 Fast 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 Pro vs Hy Image 3.5 PreviewLanded Oct 2026
- Riverflow V2.5 Fast vs FLUX.3 ImageLanded Oct 2026
- Nano Banana Pro vs Nano Banana 2.1Landed Oct 2026
- Riverflow V2.5 Fast vs Recraft V4.1 FlashLanded Sep 2026
- Nano Banana Pro vs GPT Image 2.5 SunburstLanded Sep 2026
- Riverflow V2.5 Fast vs GPT Image 2.5 FlareLanded Sep 2026
- Nano Banana Pro vs Nano Banana 2 LiteLanded Jun 2026
- Riverflow V2.5 Fast vs Riverflow V2.5 ProLanded Jun 2026
Same lab, same size, long tail
- Nano Banana Pro vs Nano Banana 2Same lab
- Nano Banana Pro vs FLUX.3 ImageSame size
- Riverflow V2.5 Fast vs Hy Image 3.5 PreviewSame size
- Riverflow V2.5 Fast vs Nano Banana 2.1Same size
- Riverflow V2.5 Fast vs FLUX SchnellSame size
- Riverflow V2.5 Fast vs Gemini 2.5 Flash ImageSame size
- Nano Banana Pro vs GPT Image 1.5Same size
- Nano Banana Pro vs GPT Image 1.5 (High)Same size
