Normalized token-usage counters returned by LLM responses and streams.
Summary
Types
@type t() :: %AttractorEx.LLM.Usage{ cache_read_tokens: non_neg_integer(), cache_write_tokens: non_neg_integer(), input_tokens: non_neg_integer(), output_tokens: non_neg_integer(), reasoning_tokens: non_neg_integer(), total_tokens: non_neg_integer() }