Cheap ways to deploy ML models [D]?

Are there any cheap or recommended ways to deploy a few machine learning models as REST APIs?

My app uses a few stable diffusion models to generate images but we rely on another service's API which often goes down... We pay around $150/Month for this but was thinking paying for GPUs would be more expensive

Does anyone have any suggestions or ideas?

api apis app diffusion diffusion models gpus images machine machine learning machinelearning machine learning models ml models rest service stable diffusion stable diffusion models thinking