Update README.md

Author: panabee

README.md

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 # Hotpot.ai API examples
 
 ## Stable Diffusion API
-Hotpot.ai offers a [Stable Diffusion API](https://hotpot.ai/stable-diffusion-api) with both proprietary enhancements and raw access to the original model.
+Hotpot.ai offers a [Stable Diffusion API](https://hotpot.ai/stable-diffusion-api) with three flavors: (1) budget (2) standard and (3) premium.
 
 ## Art Maker