Stable Diffusion API

Stable Diffusion API gives developers fast image generation through an API key, with access to SD 1.5, SDXL, Flux, ControlNet, LoRA and over 2,800 community models. The reviewer notes a 30-second setup with no GPU needed, and settings such as image size, guidance scale and the safety checker can be adjusted.

Yes, it has a limited free tier that offers up to 20 images per month, which the reviewer sees as useful for quick prototyping. The free tier does not allow commercial use, because it lacks dedicated GPU resources.

Three paid plans are listed. The Prototype Basic Plan costs $21 per month, the Standard Production Plan $47 per month with 10 concurrent API requests and Discord or email support, and the Open Source Unlimited Plan $149 per month with unlimited access to open-source models and 15 parallel API requests.

No. The reviewer notes that custom models cannot be uploaded, so users are limited to community and pre-hosted models. That still covers a wide range, including SDXL, Flux and over 2,800 community models, but it rules out bringing a privately trained model.

Toolio lists it as best for developers and beginners, and not for commercial users without a GPU. Alex scores it 4.0 out of 5 after real use, praising its easy setup and wide model support while noting that commercial use requires paid plans that may be expensive.