You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Code ReviewArea: what it touches
ImprovementsKind: in v2.1.311,
What probably matters to youSection of the release
What
The instructions Claude follows about code reviews have changed. Claude is now told to use the max review level, or in some versions of the text the max or ultra level, only when one of these explicitly asks for it:
you
your CLAUDE.md file
a skill
The text says never to choose it on its own judgment. It gives the reason: this level costs the most and starts many reviewer subagents. A subagent is a separate helper instance of Claude that works on part of a task.
Why
This stops Claude from spending a large review budget when nobody asked for it. If you want the deepest review, ask for it directly.