Represents a chat completion response returned by model, based on the provided input.

Deprecated and replaced by tool_calls. The name and arguments of a function that should be called, as generated by the model.

Represents a streamed chunk of a chat completion response returned by model, based on the provided input.

A chat completion delta generated by streamed model responses.

Deprecated and replaced by tool_calls. The name and arguments of a function that should be called, as generated by the model.

An object specifying the format that the model must output.

Specifying a particular function via {"name": "my_function"} forces the model to call that function.

A chat completion message generated by the model.

Deprecated and replaced by tool_calls. The name and arguments of a function that should be called, as generated by the model.

The function that the model called.

Specifies a tool the model should use. Use to force the model to call a specific function.

The role of the author of a message

Controls which (if any) function is called by the model. none means the model will not call a function and instead generates a message. auto means the model can pick between generating a message or calling a function. Specifying a particular function via {"type: "function", "function": {"name": "my_function"}} forces the model to call that function.