Interesting to see this plugin-adjacent functionality landing in the chat API.

It seems like there is no way to provide in context examples of calling functions, since they are now no longer just "assistant"-authored chat turns with text, but rather a distinct kind of output.

This can make it hard to demonstrate how to use functions effectively. I haven't played with this feature yet; maybe the model will somehow be able to leverage in context chat turn examples and use those to inform its function call outputs?