Azure OpenAI
Azure OpenAI Service provides access to GPT-4o, o1, and other OpenAI models hosted within Microsoft Azure, offering enterprise-grade SLAs, data privacy guarantees, and compliance certifications. It's the default choice for enterprises on Azure that need OpenAI models.
OpenAI API
API access to GPT-4o, o1, and other OpenAI models including embeddings and image generation. The most widely used LLM API in production.