Isn't xhigh on opus 4.7 very expensive on tokens?

I’ve never ran into the limits on the $100 plan, and rarely even get close.

I normally have only one session going at once though.

Same here and while I have multiple sessions going from time to time, my day isn't spent primarily developing software directly anymore (due to role, nothing about LLMs).

I only ever hit the $100/mo limits 1-2 times ever and it was always <1hr before reset (once it was <5min, the other was like ~45min).

I'm even considering going back down to $20 and using extra usage for the times I need to "burst".

Yes but Anthropic made a deal with SpaceX and increase usage limits by 50%, so you might not hit your limits.

This. XHigh and the 'plan' mode for complex tasks is absolutely a must have.

Still, the context window is sometimes too small for my usage.

agent teams can help with that, the main agent acts as an orchestrator and spawns sub agents to do the actual tasks it generally keeps the main context from overflowing.