AI Image API Pricing Compared: GPT Image, Nano Banana, Seedream
Price per image for every image model on OkayPic, and the same three prompts run on each so you can judge quality per dollar.
Last updated · prices from OkayPic
| Model | Price | Specs |
|---|---|---|
| GPT Image 2.5 | $0.03 / image | 1K · 2K · 4K · Up to 6 reference images · 7 aspect ratios |
| GPT Image 2 | $0.03 / image | Up to 6 reference images · 7 aspect ratios |
| Gemini 3 Pro Image | $0.03 / image | Up to 6 reference images · 8 aspect ratios |
| Gemini 3.1 Flash Image | $0.02 / image | Up to 6 reference images · 8 aspect ratios |
| Gemini 2.5 Flash Image | $0.02 / image | Up to 6 reference images · 7 aspect ratios |
| Seedream 5.0 | $0.20 / image | 1K · 2K · 4K · Up to 6 reference images · 8 aspect ratios |
Same prompt, side by side
Each prompt was run once on each model on OkayPic, no cherry-picking or editing.
Best value
GPT Image 2.5 at $0.03 / image for any resolution up to 4K. For the lowest price per image, the Gemini Flash models cost $0.02 / image.
FAQ
What is the cheapest 4K AI image API?
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GPT Image 2.5 on OkayPic: $0.03 / image per image at 4K, the same as at 1K.
Do I need a subscription for either model?
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No. OkayPic is pay as you go for every model: top up from $2, pay per image or per second of video, and failed generations are refunded automatically.
More comparisons
Try them yourself
One balance for every model. Top up from $2, failed generations are refunded.