Looped Transformer:
https://sebastianraschka.com/llm-architecture-gallery/looped...
Nanbeige4.1-3B: A Small General Model that Reasons, Aligns, and Acts:
https://arxiv.org/abs/2607.22083
Nanbeige-4.2-3B
https://huggingface.co/Nanbeige
Ouro:
https://ouro-llm.github.io/