Usage of a conversation.
API Key for your organization
Project ID
A unique session ID generated by caller
The event that tracks an arbitray event
track The event that represents a usage in a conversation
Conversation Usage The ID of the conversation
Properties of a usage event. Either model and tokens (cost will be calculated if model is known), or cost directly.
The timestamp of the event, defaults to "now" if not specified.
The unique ID of the user
The ID of the device, if applicable