# Guide to Azure OpenAI Service

Microsoft Azure OpenAI Service is an enterprise-level re-bundling of OpenAI’s AI models like GPT3, 3.5, Codex, DALL-E 2, chatGPT, etc.

Azure OpenAI Service makes the OpenAI AI models available from Azure.

It’s an invite-only service and is targeted at large Azure users.

The current models available are:

*   GPT 3 and GPT3.5
*   DALL-E 2
*   Codex
*   chatGPT

Check out more details [here](https://learn.microsoft.com/en-us/legal/cognitive-services/openai/limited-access).