Pi with extensions included is always going to burn more tokens than pi without extensions, no?

Not if the extensions don't add any tools or modify your system prompt. :)

Hell, some extensions could theoretically lower your token burn. (Like rtk, if it actually worked.)

What's the use of extensions without tools or prompts?

I have one that stashes/pops a single prompt, like Claude Code's Ctrl+s feature.

I have another one that allows you to edit the items in your Pi /tree history.

Some permission manager extensions also sit between the model and the harness, and don't actively change the tool or prompt info.

I probably have more, but you get the idea.

agentdev001 a day ago | parent | prev [-]

A cup holder doesnt make your car go faster.

The coffee prevents you from falling asleep at the wheel and crashing, however.

	▲	kelnos 18 hours ago \| parent [-]
		If you're that tired that you need coffee to stay awake, you absolutely shouldn't be driving.