Replicate

Replicate is a model-agnostic API platform that hosts and runs thousands of open-source AI models including FLUX, SDXL, Stable Diffusion variants, ControlNet, upscalers, and many more. The simplest way to access nearly any image generation model via API without managing GPU infrastructure. Pay per-use — no subscription required. Heavily used by developers building image generation into applications. Also includes community-contributed fine-tuned models and the ability to deploy your own models.