returns_usage_metadata() — langchain Function Reference

Architecture documentation for the returns_usage_metadata() function in chat_models.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ returns_usage_metadata() — langchain Function Reference

Dependency Diagram

graph TD
  3fc9c5f5_aab7_c3f4_2cd1_f26de7510cfc["returns_usage_metadata()"]
  93a85b25_a139_159d_bcf5_03a6e2ed4dd3["ChatModelTests"]
  3fc9c5f5_aab7_c3f4_2cd1_f26de7510cfc -->|defined in| 93a85b25_a139_159d_bcf5_03a6e2ed4dd3
  style 3fc9c5f5_aab7_c3f4_2cd1_f26de7510cfc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/standard-tests/langchain_tests/unit_tests/chat_models.py lines 189–196

    def returns_usage_metadata(self) -> bool:
        """Returns usage metadata.

        Whether the chat model returns usage metadata on invoke and streaming
        responses.

        """
        return True