Hi @Aaron
Welcome to Microsoft Q&A! Thanks for posting the question.
The API key provided by Azure OpenAI is specifically designed for use with Azure Open AI resource, however, the API key offered by OpenAI is designed for general use with any application or service that integrates with the OpenAI API. In terms of functionality and capabilities, I don't think any significant difference between the two API keys. Both keys provide access to the similar set of OpenAI models and services available for the Open AI resource. Ultimately, the choice of which API key to use will depend on your specific needs and requirements. If you are already using Azure services and want to integrate with the OpenAI API, the Azure OpenAI API key may be a more convenient option. If you are not using Azure services or want a more general-purpose API key, the OpenAI API key may be a better choice. Hope this helps. Please let me know if you have any other questions.
Thanks Saurabh