@type t() :: %ExBifrost.Model.CountTokensResponse{
  extra_fields: ExBifrost.Model.BifrostResponseExtraFields.t() | nil,
  input_tokens: integer() | nil,
  input_tokens_details:
    ExBifrost.Model.CreateCompaction200ResponseUsageInputTokensDetails.t() | nil,
  model: String.t() | nil,
  object: String.t() | nil,
  output_tokens: integer() | nil,
  token_strings: [String.t()] | nil,
  tokens: [integer()] | nil,
  total_tokens: integer() | nil
}