Absolutely. I use caveman to help with that: https://github.com/JuliusBrussee/caveman

You can just add "be brief" to the prompt to replace the entire plugin. Same results.

https://www.maxtaylor.me/articles/i-benchmarked-caveman-agai...

Not a bad idea - however

> Caveman only affects output tokens — thinking/reasoning tokens are untouched.

The problem is the thinking. But could help to tune my system prompt for Kimi.