Token usage tracking We've made it easier to access response metadata returned by LLM providers with a new field on AIMessages! Useful information like token usage for supported models will appear there. Python : https://
python.langchain.com/docs/modules/m
odel_io/chat/token_usage_tracking/
…
JS : https://
js.langchain.com/docs/modules/m
odel_io/chat/token_usage_tracking
…
LangChain adds token usage tracking for LLM responses
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