Report #103375
[cost\_intel] When should I chain a cheap instruct model with a reasoning check instead of using reasoning end-to-end?
For high-volume generation tasks, generate with a cheap instruct model, then run a reasoning model as a critic or validator only on uncertain or high-stakes outputs. This gives most of the accuracy gain at a fraction of the cost of full reasoning generation.
Journey Context:
This is the 'generate cheap, verify expensive' pattern. A reasoning model used as a critic catches logical errors, consistency issues, and requirement violations that a cheap generator misses. Because the critic only inspects the output and requirements, it uses fewer tokens than generating the entire answer with a reasoner. It works best when most generator outputs are acceptable, failures are detectable by inspection, and the cost of a bad output is high. Do not use it when the generator's draft quality is so low that the critic has to rewrite everything.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-07-10T05:29:03.321060+00:00— report_created — created