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OutputTokenDetails Class — langchain Architecture

Architecture documentation for the OutputTokenDetails class in ai.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  c45b823e_5666_dd14_af7c_06a06e294c89["OutputTokenDetails"]
  49c04e35_a53c_8d1b_eb09_1203ad7cdacf["ai.py"]
  c45b823e_5666_dd14_af7c_06a06e294c89 -->|defined in| 49c04e35_a53c_8d1b_eb09_1203ad7cdacf

Relationship Graph

Source Code

libs/core/langchain_core/messages/ai.py lines 74–101

class OutputTokenDetails(TypedDict, total=False):
    """Breakdown of output token counts.

    Does *not* need to sum to full output token count. Does *not* need to have all keys.

    Example:
        ```python
        {
            "audio": 10,
            "reasoning": 200,
        }
        ```

    May also hold extra provider-specific keys.

    !!! version-added "Added in `langchain-core` 0.3.9"

    """

    audio: int
    """Audio output tokens."""

    reasoning: int
    """Reasoning output tokens.

    Tokens generated by the model in a chain of thought process (i.e. by OpenAI's o1
    models) that are not returned as part of model output.
    """

Defined In

Source

Frequently Asked Questions

What is the OutputTokenDetails class?
OutputTokenDetails is a class in the langchain codebase, defined in libs/core/langchain_core/messages/ai.py.
Where is OutputTokenDetails defined?
OutputTokenDetails is defined in libs/core/langchain_core/messages/ai.py at line 74.

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