Last month we consumed all the subscription credits by the 7th day, and had to top the extra credits up every 2-3 days. Last month was definitely not cheaper than a CC subscription. It actually triggered a cost savings effort across the Engineering org (cancelling subscriptions, stopping environments,...) in order to be able to afford AI usage which was not appropriately budgeted for ¯\_(ツ)_/¯
Edit: wording on the cost saving effort
> Last month was definitely not cheaper than a CC subscription.
How is that possible? AFAIK copilot charges the same price per token that claude does. They don't offer fixed price subscriptions to enterprise customers (again AFAIK but even if they did presumably they would match the price).
The only exception I'm aware of is volume discounts and you can get those from both copilot and bedrock (and presumably also vertex).