@type t() :: %OpenAi.Usage.Completions.Result{
  api_key_id: String.t() | nil,
  batch: boolean() | nil,
  input_audio_tokens: integer() | nil,
  input_cached_tokens: integer() | nil,
  input_tokens: integer(),
  model: String.t() | nil,
  num_model_requests: integer(),
  object: String.t(),
  output_audio_tokens: integer() | nil,
  output_tokens: integer(),
  project_id: String.t() | nil,
  user_id: String.t() | nil
}