GPT 5.2 support for Agent Studio LLM Actions

Key Dates:

• Release: December 2025

What is it:

• Use GPT 5.2 in your Agent Studio LLM actions.

This is available in US & EU on OpenAI Direct + US on Azure OpenAI.

Azure is still working to get GPT-5.2 up in the other data centers. Once available, we'll expand support! Nothing needs to be done to turn it on, just slip the right model ID in your LLM actions.

We just gave our model reference a fresh coat of paint, so check it out here: LLM Action Model Reference