Hello @Admin (KK) ,
Welcome to the MS Q&A platform.
You can check the per pipeline building cost to see where the price increased compared to the previous months.
ADF added built-in per pipeline detailed billing view. This feature was built on top of the Azure Billing and Cost Analysis platform, allowing you to stay with the cost and budget management tool you are familiar with to identify spending trends and spot where overspending might have occurred.
The below techcommunity document explains granular billing for ADF. This will help in finding out where the cost increased on your pipelines.
https://techcommunity.microsoft.com/t5/azure-data-factory-blog/granular-billing-for-azure-data-factory/ba-p/3654600
This video explains the per pipeline billing view for ADF.
Please let me know if you have any further questions.
Other documents:
https://learn.microsoft.com/en-us/azure/data-factory/plan-manage-costs
https://azure.microsoft.com/en-us/pricing/details/data-factory/data-pipeline/