@type t() :: %ExBifrost.Model.ChatCompletionResponse{
  choices:
    [ExBifrost.Model.CreateChatCompletion200ResponseChoicesInner.t()] | nil,
  citations: [String.t()] | nil,
  created: integer() | nil,
  extra_fields: ExBifrost.Model.BifrostResponseExtraFields.t() | nil,
  id: String.t() | nil,
  model: String.t() | nil,
  object: String.t() | nil,
  search_results: [ExBifrost.Model.PerplexitySearchResult.t()] | nil,
  service_tier: String.t() | nil,
  system_fingerprint: String.t() | nil,
  usage: ExBifrost.Model.BifrostLlmUsage.t() | nil,
  videos: [ExBifrost.Model.PerplexityVideoResult.t()] | nil
}