Following are fields that are not part of OpenAI API Reference, but are present in responses from other providers
let citations: [String]?Perplexity Citations for the generated answer. https://docs.perplexity.ai/api-reference/chat-completions#response-citations
import OpenAIstruct ChatResult@frozen struct StringA Unicode string value that is a collection of characters.
init(from decoder: any Decoder) throws let choices: [Choice]A list of chat completion choices. Can be more than one if n is greater than 1.
let created: IntThe Unix timestamp (in seconds) of when the chat completion was created.
let id: StringA unique identifier for the chat completion.
let model: StringThe model used for the chat completion.
let object: StringThe object type, which is always chat.completion.
let serviceTier: String?The service tier used for processing the request.
let systemFingerprint: StringThis fingerprint represents the backend configuration that the model runs with. Can be used in conjunction with the seed request parameter to understand when backend changes have been made that might impact determinism.
let usage: Self.CompletionUsage?Usage statistics for the completion request.
struct Choiceenum CodingKeysstruct CompletionUsage