Every coding agent eventually writes to your repository. The question is: what branch does it write to?
Most tools answer that question by making it your problem. Helix answers it at the system level, before the agent touches a single file.
Most AI agents fail not because they lack capability — they fail because they drift.
They start with your intent, pick up momentum, and end up doing twelve things you never asked for. Or they declare success before anything actually ships. Manager Mode in Helix is the architectural answer to that problem.
Switching models mid-session sounds simple. In practice, most systems make you start over.
You pick a model at the beginning of a conversation. You build context — twenty messages deep, a dozen tool calls, a pile of file reads. Then you realize the model is too slow, too expensive, or missing a capability you need. Your options: abandon the session and start fresh, or keep going with the wrong tool for the job.
Helix doesn't work that way.