Hi Eliah Ninyo,
Thank you for reaching out to us on the Microsoft Q&A forum.
To investigate the unexpected cost increase, follow these steps to get more details about your virtual machine consumption.
You can monitor and analyze your usage in Azure by going to Azure Cost Management + Billing in the Azure portal. Under Cost Management, use Cost Analysis to break down your consumption by service and resources.
Sometimes, costs can accumulate from resources that are still running in the background, such as disks, public IPs, or additional AI services that may have been created.
Ensure there are no unused resources that can be turned off or deleted. Additionally, check that your VM size and the resources it uses, like storage or networking, are appropriate for your needs. Running a larger VM than necessary or using features like high-performance GPUs can significantly increase costs.
For more information, please refer to the following documents:
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If you have any further queries, please let us know in the comments. We are glad to help you.