Claude Code 新增 effort 控制与 /usage 用量明细

You also get a bit more control over Claude's effort.

Typing ultrathink in a message now bumps effort to xhigh for just that one turn, so you can think harder on one problem without changing your setting for the whole session.

You can now also tell Claude which effort level to run a subagent at. If your session is on high but you want the subagents for a task on medium, just ask!

And /usage in the CLI now tells you in plain words what's using up your limits. If there's a quick fix, you can press f to apply it right there.