AI image model comparison
Seedream 4.5 vs Nano Banana
Image quality, cost per image, and editing features compared side by side. Or skip the guesswork and generate with both.
ByteDance Seed
Seedream 4.5
Seedream 4.5 is the latest in-house image generation model developed by ByteDance.
- Per image
- $0.04
- Output / 1M
- $9.58
- Image Elo
- Not available
Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding.
- Per image
- $0.039
- Output / 1M
- $30
- Image Elo
- 1187
At a glance
Quick verdict
Which model wins on the things that matter most when you're making images.
Cheaper per image
Nano Banana
$0.039 vs $0.04, 1.0x cheaper
Better image quality
Not available
Not enough arena data
Better at editing
Not available
Not enough arena data
Newer release
Seedream 4.5
Released December 23, 2025
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#10 · 55.6% wins1187Image editing
Nano BananaNot availableGraphic design
Nano Banana#10 · 56.9% wins1168Logos
Nano Banana#11 · 51.4% wins1170Pricing
Seedream 4.5 vs Nano Banana price per image
What each image actually costs, plus the underlying API rates. Cheaper option highlighted.
| Metric | Nano Banana | |
|---|---|---|
| Cost per imageEstimated, ~1 megapixel (1024×1024) | $0.04 | $0.039 |
| Image outputPer 1M image tokens | $9.58 | $30 |
| Tokens per imageHow many image tokens one ~1MP image uses | 4,175 | 1,290 |
| Prompt textPer 1M input tokens | Included | $0.30 |
| Reference imagesPer 1M input image tokens | Included | $0.30 |
What it costs in practice
Estimated totals at standard resolution.
Single image
1 image
Nano Banana$0.039Social media batch
50 images
Nano Banana$1.93Product catalog
1,000 images
Nano Banana$38.70Specs
Inputs, outputs, and limits
What each model accepts, what it gives back, and how long your prompt can be.
| Metric | Nano Banana | |
|---|---|---|
| Accepts | Image, Text | Image, Text |
| Produces | Image | Image, Text |
| Max prompt lengthText plus reference images | 4K tokens | 33K tokens |
| Reasoning step | No | No |
| Release date | December 23, 2025 | October 7, 2025 |
Features
Supported features
Creative controls available for each model.
| Metric | Nano Banana | |
|---|---|---|
| Image editingAccepts reference or source images | Supported | Supported |
| Text alongside imagesCan explain or caption what it made | Not supported | Supported |
| Thinks before drawingPlans the image with a reasoning step | Not supported | Not supported |
| Reproducible seedsSame seed, same image | Not supported | Supported |
| Temperature controlTrade consistency for variety | Supported | Supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Seedream 4.5 vs GPT Image 2.5 Sunburst
- Seedream 4.5 vs Nano Banana 2
- Seedream 4.5 vs Nano Banana 2 Lite
- Seedream 4.5 vs Muse Image
- Seedream 4.5 vs GPT-5.4 Image 2
- Seedream 4.5 vs GPT Image 2
- Seedream 4.5 vs Seedream 5.0 Flash
- Seedream 4.5 vs Nano Banana Pro
- Seedream 4.5 vs Ming Image 0.1 Design
- Seedream 4.5 vs Seedream 5.0 Pro
- Seedream 4.5 vs FLUX.2 Pro
- Seedream 4.5 vs Grok Imagine Image 2.0
- Seedream 4.5 vs Seedream 5.0 Lite
- Seedream 4.5 vs FLUX.2 Klein 4B
- Seedream 4.5 vs Recraft V4.1 Flash
- Seedream 4.5 vs FLUX.3 Image
- Seedream 4.5 vs Grok Imagine Image Quality
- Seedream 4.5 vs Qwen Image 3
- Seedream 4.5 vs FLUX.2 Max
- Seedream 4.5 vs MAI-Image-2.6 Flash
- Seedream 4.5 vs Riverflow V2.5 Pro
- Seedream 4.5 vs MAI-Image-2.6
- Seedream 4.5 vs FLUX.2 Flex
Nano BananaView full model details- Nano Banana vs GPT Image 2.5 Sunburst
- Nano Banana vs Nano Banana 2
- Nano Banana vs Nano Banana 2 Lite
- Nano Banana vs Muse Image
- Nano Banana vs GPT-5.4 Image 2
- Nano Banana vs Riverflow V2.5 Pro
- Nano Banana vs GPT Image 2
- Nano Banana vs MAI-Image-2.6
- Nano Banana vs MAI-Image-2.6 Flash
- Nano Banana vs Seedream 5.0 Flash
- Nano Banana vs Nano Banana Pro
- Nano Banana vs Ming Image 0.1 Design
- Nano Banana vs FLUX.2 Flex
- Nano Banana vs FLUX.2 Pro
- Nano Banana vs Seedream 5.0 Pro
- Nano Banana vs Grok Imagine Image 2.0
- Nano Banana vs Seedream 5.0 Lite
- Nano Banana vs Recraft V4.1 Flash
- Nano Banana vs FLUX.3 Image
- Nano Banana vs Grok Imagine Image Quality
- Nano Banana vs Qwen Image 3
- Nano Banana vs FLUX.2 Max
Our take
Nano Banana is 1.0x cheaper per image. The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Seedream 4.5 or Nano Banana cheaper?
Nano Banana is cheaper at about $0.039 per standard image, compared with $0.04 for Seedream 4.5. For 1,000 images that is $38.70 versus $40.
Can Seedream 4.5 and Nano Banana 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 Seedream 4.5 and Nano Banana at the same time?
Yes. Shortcut Chat sends one prompt to multiple image models at once, so you can see Seedream 4.5 and Nano Banana results side by side and keep the one you like.
Why choose? Generate with both.
Send one prompt to Seedream 4.5 and Nano Banana at the same time. See both images side by side and keep the one you like.