# Reasoning model

A model trained to work through a problem in a sequence of steps and plan its answer before it responds, spending more time and tokens to do better on hard tasks.

Also called: Thinking model, Large reasoning model (LRM)

Kind of: Model

Related: Reasoning effort

Source: https://redfinchadvisory.com/lexicon/reasoning-model (version 1.0, changed 2026-10-21)