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Yup thats correct, Love as more tools come up! We though tried to follow the actual OpenTelemetry's Semantic Convention for GenAI, the others dont.

Additionally none of these libraries "then"(Can check again) seemed to send the cost attribute which was what most of our user's mentioned, So we added that.

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Langtrace core maintainer here. We capture input/output/total tokens for both streaming and non streaming across various LLM providers. For streaming we calculate using tiktoken library as OpenAI does not show that with their outputs. Cost is calculated on the client side as it may keep changing. But all you need is the cost table for the llm vendor and you can get the cost for token usage

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