I'm on Max. This morning, just to test, before doing anything else whatsoever, I was at 0%, and I typed 'test one two three' into CC.

That put me at 12%.

I have no MCPs except the built in claude-in-chrome.

This is clearly a bug.

Don't they consume less of the token quota in case the subagents are running cheaper models like Sonnet and Haiku compared to Opus?

Yes, sorry. I meant it more as a descriptor of how many tokens it consumes. You are still stuck burning money.