Opaque recurrence
A way of making a model think harder by running the same input through it several times in a loop, instead of having it write out its reasoning step by step. Also called recurrent depth. It leaves less readable reasoning behind, which worries safety researchers who check the chain of thought.
“If the model uses opaque recurrence, there's less chain of thought for the monitors to read.”
See also
In the history of AI
Part of the Extended list
Opaque recurrence is on the Extended list: builder jargon, industry terms, and newer slang for when you want to go further. It entered common use around 2026.