@type t() :: %ExBifrost.Model.CreateCompactionRequest{
  fallbacks: [String.t()] | nil,
  input: ExBifrost.Model.CreateCompactionRequestInput.t() | nil,
  instructions: String.t() | nil,
  model: String.t(),
  previous_response_id: String.t() | nil,
  prompt_cache_key: String.t() | nil,
  prompt_cache_retention: String.t() | nil,
  service_tier: String.t() | nil
}