I posted this manual gear shifter I made for Claude, where you drop it into a gear and it switches models.

That post kind of blew up. Thank you all :)

A bunch of people also pointed out something I had not thought about properly:

Switching models mid-session breaks your prompt cache.

Every `/model` call makes the API re-read your whole conversation at full price.

So the biggest change in this update is **NEW TAB mode**.

Now when you shift gears, it opens that model in its own terminal tab instead of switching the live session.

Each model keeps its own conversation and its own warm cache.

Also added:

**Pit lights**  
Little dots light up on the dash when your session spawns subagents.

**Directory picker**  
Green digital readout on the dash. Point it at any project folder and new sessions launch there.

**Remappable gears**  
Open settings, click a gear on the H-pattern, and pick whatever model you want. Haiku through Fable.

Still built with Claude, for Claude.

Happy to answer questions about how any of it works under the hood.

The whole thing drives tmux. Nothing hacky is injected into Claude itself.

My X if you want updates or attribution:  
[https://x.com/milindlabs](https://x.com/milindlabs)

I created a shifter for claude code (New Updates)