Research suggests some frontier models are a small transformer looped twice

Claim

Princeton's DeepLoop showed looped Transformers scale depth stably once residual rules account for revisited parameters, with its author passing along the rumor that some frontier models are basically a 48-layer transformer looped twice.

Reported metric: 48 layers, looped

Reporting date: 2026-07-19 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

• Welcome to July 19, 2026 (theinnermostloop.substack.com)