Technologies/LangChain/langchain_tokens_completion
LangChainLangChainMetric

langchain_tokens_completion

Number of tokens used in the completion of a response.
Dimensions:None
Available on:DatadogDatadog (1)
Interface Metrics (1)
DatadogDatadog
Number of tokens used in the completion of a response.
Dimensions:None
Sources
langchain.tokens.completiongithub.com
Related Insights (3)
Token Usage Forecast Drift from Model Changeswarning

LangSmith's token usage forecasting assumes stable model behavior. Untagged model version changes (e.g., GPT-4 → GPT-4-turbo, Claude updates) can shift token distributions, invalidating forecasts and triggering false cost alerts.

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Agent Intermediate Steps Explosionwarning

langchain_agent_intermediate_steps counts reasoning/tool-use iterations. Unbounded growth indicates agents spinning on complex tasks, inefficient tool selection, or poor stopping criteria, driving up latency and cost.

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Usage metadata extraction from serialized tracer outputs now supportedinfo
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