A subagent is a helper Claude starts to handle part of a task. Claude Code has a built-in exploring subagent that is limited to 15 turns and does not load your project instructions. It either runs on Haiku, a smaller and faster model, or uses the same model as your main session.
Before, it picked Haiku only under a fixed set of conditions. It can now also pick Haiku in a remote session, meaning one running on another machine: when CLAUDE_CODE_REMOTE is set, CLAUDE_CODE_REMOTE_SESSION_ID is not empty and one more check passes. A remote setting must still allow it, and when the server sends nothing that setting falls back to allowing it.
Remote and cloud sessions may start running this subagent on a cheaper model than your main one.
tengu_nimble_wren Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.302: on
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.302. It isn't a statement about your account. What a flag value here can and cannot tell you