Use Haiku
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Preview
Terminal
❯ _summarize the last commit
⏵⏵ auto mode on (shift+tab to cycle)
⚡ this prompt runs on HaikuClaude Desktop
Draws nothing in Claude Desktop.
What it does
Start a prompt with _ and that turn runs on Haiku, along with any subagents it starts. Other prompts keep the session's model.
- What you see
- Hints under the prompt, in the spinner and under the reply
- Works in
- Terminal
- Slash commands
- None
- Uses your tokens
- No
- Changes files
- Nothing
- Network access
- None
- Reviewed commit
- c2ee6a4
- Preview recorded with
- Claude Code 2.1.296
How it works
- Lights up the _ as you type, and the line under the prompt says it runs on Haiku.
- On send, removes the _ and sends every request of that turn to claude-haiku-5-5.
- Subagents the Haiku turn starts run on Haiku too, even after the turn ends.
- Names the model that answered in a line under the reply, or warns if another one did.
Good to know
- Needs Claude Code 2.1.289 or newer.
- Only an idle prompt starting with a single _ counts. A prompt sent mid-turn keeps the current model.
- Adds a note you don't see to the prompt, telling the model it is Haiku, so it answers Haiku if asked.