This setting makes Claude Haiku the default model for Claude Code.
Haiku is the lightest model in the lineup, with fast responses and a lower cost per token.
It’s ideal for simple, high-volume tasks where speed matters more than deep reasoning.
When to use
- For repetitive, straightforward tasks like small edits and searches.
- When cost and latency take priority over depth.
- For prototypes and fast iteration.
How to use
Apply the setting; switch to Sonnet when a task calls for more reasoning.