Hello 김세형, I believe you should be looking at the azure-openai-emit-token-metric policy in Azure API Management. You can find the details here -- https://learn.microsoft.com/en-us/azure/api-management/azure-openai-emit-token-metric-policy and https://techcommunity.microsoft.com/t5/ai-azure-ai-services-blog/best-practice-guidance-for-ptu/ba-p/4152133
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