Currently, most frontier open-weight LLMs share a MoE transformer + various attention optimization architecture, and the actual performance difference comes from post-training and infrastructure design
The Architecture Behind Open-Source LLMs
In this article, we will cover various open-source models and the engineering bets that define each one.
https://blog.bytebytego.com/p/the-architecture-behind-open-source


Seonglae Cho