referenceJune 17, 2026· 3 min read

How to use CTHINK and CREUSE: bank a chain of thought

CTHINK stores a reasoning trace as a reusable step graph; CREUSE fetches the matching plan for a new query at a fraction of the token cost.

The expensive part of a hard answer is the reasoning. CTHINK stores that reasoning's shape; CREUSE replays it for the next question with the same structure.

crowkis cli

> CTHINK "amortize 12000 over 24mo at 6%" "step1: rate/12 ... step2: ... step3: payment="
OK

> CREUSE "amortize 8000 over 36mo at 5%"
"reasoning plan matched - substitute: principal=8000, n=36, apr=5 ..."

The first solve pays full reasoning tokens; every structural sibling after pays only a recomposition.