Very good question! Yes, if you just want to try out your use case you can also use postman! But with prompt editor you can also save your prompts and the responses and easily switch between models to compare the responses of different LLMs. It is just an easier way to interact with different models as well as to keep your prompt history and change parameters easily. If you want to develop a use case with generative AI hub, you can either use the deployment URL plus token anywhere or use the Python SDK of generative AI hub for more sophisticated use cases! More videos on the Python SDK are coming soon!