Does the Foundation Model provide Objective-C compatible APIs?

In the latest Xcode video, I saw that the newest version of Xcode has integrated large language models (LLMs), allowing users to switch between models in Settings. However, after downloading Xcode 26 Beta and opening Settings, I couldn't find this feature. Is it because this functionality hasn't been rolled out in the Beta version?

When watching videos about Xcode, the AI coding feature is demonstrated using Swift. Since our company started development early with an Objective-C codebase, I want to know whether the Intelligence feature mentioned in the new feature video supports Objective-C

When I use ChatGPT in Xcode, the following error is displayed： It was working fine before, but suddenly it became like this, without changing any configuration. Why?