Stability AI image APIs - verified
Stability AI API: 10 image models with 10 price rows, priced in credits, read from the provider's own pages on October 18, 2026. No model here has a shutdown date within six months.
Read from platform.stability.ai. Compare every image generation API
1 credit = $0.01
“API usage is based on credits. 1 credit = $0.01.”
API id not shown on the provider's pages
8 credits
Credits
Per generation
“| Stable Image Ultra | Flagship image service based on Stable Diffusion 3.5 Large, offering the highest quality and detail | 8 |”
API id not shown on the provider's pages
6.5 credits
Credits
Per generation
“| Stable Diffusion 3.5 Large | SD 3.5 is our most powerful 8 billion parameter base model with superior quality and prompt adherence | 6.5 |”
API id not shown on the provider's pages
4 credits
Credits
Per generation
“| Stable Diffusion 3.5 Large Turbo | Turbo variant of Stable Diffusion 3.5 Large, for fast high-quality images | 4 |”
API id not shown on the provider's pages
3.5 credits
Credits
Per generation
“| Stable Diffusion 3.5 Medium | The 2 and 2.5 billion parameter variants of Stable Diffusion 3.5 respectively | 3.5 |”
API id not shown on the provider's pages
2.5 credits
Credits
Per generation
“| Stable Diffusion 3.5 Flash | The distilled version of Stable Diffusion 3.5 Medium, for fast, high-quality images | 2.5 |”
API id not shown on the provider's pages
3 credits
Credits
Per generation
“| Stable Image Core | Optimized for fast and cost-effective image generation | 3 |”
API id not shown on the provider's pages
From 0.9 credits
Credits
Starting pricePer generation
“| SDXL 1.0 | Legacy base model for straightforward image generation | From 0.9 |”
legacy
“| SDXL 1.0 | Legacy base model for straightforward image generation | From 0.9 |”
API id not shown on the provider's pages
5 credits
Credits
Per generation
“| Inpaint | Use a mask (or alpha channel) to replace anything in an image | 5 |”
mask-based inpainting
“| Inpaint | Use a mask (or alpha channel) to replace anything in an image | 5 |”
API id not shown on the provider's pages
4 credits
Credits
Per generation
“| Outpaint | Inserts additional content in an image to fill in the space in any direction | 4 |”
outpainting
“| Outpaint | Inserts additional content in an image to fill in the space in any direction | 4 |”
API id not shown on the provider's pages
5 credits
Credits
Per generation
“| Structure | Use an input image to precisely guide generation | 5 |”
input image guides generation
“| Structure | Use an input image to precisely guide generation | 5 |”
Stable Image Ultra: 8 credits. Stable Diffusion 3.5 Large: 6.5 credits. Stable Diffusion 3.5 Large Turbo: 4 credits. Stable Diffusion 3.5 Medium: 3.5 credits. Stable Diffusion 3.5 Flash: 2.5 credits. Stable Image Core: 3 credits. SDXL 1.0: From 0.9 credits. Inpaint: 5 credits. Outpaint: 4 credits. Structure: 5 credits. Each is the first price the provider lists for the model, in its own unit, as of October 18, 2026; the model cards list every size and quality.
Verified from each provider's own pricing pages and image docs; every quote was string-matched against the page that day. Prices are shown in the provider's own unit and never converted between units. Retirement dates are cross-checked against our deprecations tracker. Prices change without notice; check the linked source before you commit a budget to one.
Newsletter
One email per week. New model releases, pricing changes and what they mean for what you build.