Reasoning model
A model trained to work through a problem step by step before answering, trading speed for accuracy on math, code, and planning. Also called a large reasoning model (LRM).
“Use the reasoning model for the tax math, the fast one for email drafts.”
See also
In the history of AI
Part of the Extended list
Reasoning model is on the Extended list: builder jargon, industry terms, and newer slang for when you want to go further. It entered common use around 2024.