AI image model comparison
Nano Banana 2.1 vs Riverflow V2.5 Pro
Side by side comparison of Nano Banana 2.1 and Riverflow V2.5 Pro on image quality, cost per image, editing features, and more.
Nano Banana 2.1 (Gemini Nano Banana 2.1) is Google's image generation and editing model on the Flash tier, succeeding Nano Banana 2 and Nano Banana Pro.
- Per image
- Not available
- Output / 1M
- $30
- Image Elo
- Not available
Riverflow V2.5 Pro is the most powerful variant of Sourceful's Riverflow 2.5 lineup, best for top-tier control and quality-sensitive outputs.
- Per image
- $0.13
- Output / 1M
- $31.14
- Image Elo
- 1349
Comparing chat or coding models? Compare text models
At a glance
Quick verdict
Which model wins on the things that matter most when you're making images.
Cheaper per image
Not available
Only one lists a per-image price
Better image quality
Not available
Not enough arena data
Better at editing
Not available
Only one editing score is available
Newer release
Nano Banana 2.1
Released October 6, 2026
Quality
Image quality rankings
Elo ratings from Design Arena, where people vote between two anonymous images made from the same prompt. Higher is better.
Image generation
Nano Banana 2.1Not availableImage editing
Nano Banana 2.1Not availableGraphic design
Nano Banana 2.1Not availableLogos
Nano Banana 2.1Not availablePricing
Nano Banana 2.1 vs Riverflow V2.5 Pro price per image
What each image actually costs, plus the underlying API rates. Cheaper option highlighted.
| Metric | Nano Banana 2.1 | |
|---|---|---|
| Cost per imageEstimated, ~1 megapixel (1024×1024) | Not available | $0.13 |
| Image outputPer 1M image tokens | $30 | $31.14 |
| Tokens per imageHow many image tokens one ~1MP image uses | Not available | 4,175 |
| Prompt textPer 1M input tokens | $1.50 | Included |
What it costs in practice
Estimated totals at standard resolution.
Single image
1 image
Nano Banana 2.1Not availableSocial media batch
50 images
Nano Banana 2.1Not availableProduct catalog
1,000 images
Nano Banana 2.1Not availableSpecs
Inputs, outputs, and limits
What each model accepts, what it gives back, and how long your prompt can be.
| Metric | Nano Banana 2.1 | |
|---|---|---|
| Accepts | Image, Text | Image, Text |
| Produces | Image, Text | Image |
| Max prompt lengthText plus reference images | 66K tokens | 33K tokens |
| Reasoning step | Optional | Always on |
| Release date | October 6, 2026 | June 4, 2026 |
Features
Supported features
Creative controls available for each model.
| Metric | Nano Banana 2.1 | |
|---|---|---|
| Image editingAccepts reference or source images | Supported | Supported |
| Text alongside imagesCan explain or caption what it made | Supported | Not supported |
| Thinks before drawingPlans the image with a reasoning step | Supported | Supported |
| Reproducible seedsSame seed, same image | Supported | Not supported |
| Temperature controlTrade consistency for variety | Supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
Nano Banana 2.1View full model details- Nano Banana 2.1 vs Nano Banana 2
- Nano Banana 2.1 vs GPT Image 2.5 Sunburst
- Nano Banana 2.1 vs Seedream 5.0 Flash
- Nano Banana 2.1 vs GPT Image 2.5 Flare
- Nano Banana 2.1 vs Muse Image
- Nano Banana 2.1 vs Hy Image 3.5 Preview
- Nano Banana 2.1 vs Nano Banana 2 Lite
- Nano Banana 2.1 vs GPT Image 2
- Nano Banana 2.1 vs GPT-5.4 Image 2
- Nano Banana 2.1 vs GPT-5 Image Mini
- Nano Banana 2.1 vs Qwen Image 2.1 Turbo
- Nano Banana 2.1 vs MAI-Image-2.6 Flash
- Nano Banana 2.1 vs MAI-Image-2.6
- Nano Banana 2.1 vs MAI-Image-2.5
- Nano Banana 2.1 vs GPT-5 Image
- Nano Banana 2.1 vs GPT Image 1
- Riverflow V2.5 Pro vs MAI-Image-2.6
- Riverflow V2.5 Pro vs MAI-Image-2.6 Flash
- Riverflow V2.5 Pro vs Nano Banana 2
- Riverflow V2.5 Pro vs Nano Banana Pro
- Riverflow V2.5 Pro vs MAI-Image-2.5
- Riverflow V2.5 Pro vs FLUX.2 Flex
- Riverflow V2.5 Pro vs FLUX.2 Pro
- Riverflow V2.5 Pro vs GPT Image 2.5 Sunburst
- Riverflow V2.5 Pro vs Seedream 5.0 Flash
- Riverflow V2.5 Pro vs Seedream 4.5
- Riverflow V2.5 Pro vs Seedream 5.0 Pro
- Riverflow V2.5 Pro vs Seedream 5.0 Lite
- Riverflow V2.5 Pro vs K3 Edit
- Riverflow V2.5 Pro vs Grok Imagine Image 2.0
- Riverflow V2.5 Pro vs FLUX 3 Image
- Riverflow V2.5 Pro vs FLUX.2 Max
FAQ
Frequently asked questions
Can Nano Banana 2.1 and Riverflow V2.5 Pro edit existing images?
Yes. Both accept reference images, so you can upload a photo and ask for changes like a new background, different lighting, or added text.
Can I use Nano Banana 2.1 and Riverflow V2.5 Pro at the same time?
Yes. Shortcut Chat sends one prompt to multiple image models at once, so you can see Nano Banana 2.1 and Riverflow V2.5 Pro results side by side and keep the one you like.
Why choose? Generate with both.
Send one prompt to Nano Banana 2.1 and Riverflow V2.5 Pro at the same time. See both images side by side and keep the one you like.