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https://github.com/hwchase17/langchain.git
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fbfed65fb1
```python
class UsageMetadata(TypedDict):
"""Usage metadata for a message, such as token counts.
Attributes:
input_tokens: (int) count of input (or prompt) tokens
output_tokens: (int) count of output (or completion) tokens
total_tokens: (int) total token count
"""
input_tokens: int
output_tokens: int
total_tokens: int
```
```python
class AIMessage(BaseMessage):
...
usage_metadata: Optional[UsageMetadata] = None
"""If provided, token usage information associated with the message."""
...
```
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|---|---|---|
| .. | ||
| __init__.py | ||
| ai.py | ||
| base.py | ||
| chat.py | ||
| function.py | ||
| human.py | ||
| system.py | ||
| tool.py | ||
| utils.py | ||