Fello AI thumbnail with the headline “LONGCAT-2.0 1.6 TRILLION CODING MODEL” beside a glossy rounded-square LongCat logo tile, set on a dark green coding-themed tech background with neon glow.

LongCat-2.0: Meituan’s 1.6 Trillion-Parameter Open-Source Coding Model

Meituan has open-sourced LongCat-2.0, a 1.6 trillion-parameter Mixture-of-Experts model with a native 1-million-token context window, released on June 30, 2026 under a permissive MIT license. It is the model that quietly topped global developer charts on OpenRouter for two months under the codename “Owl Alpha”, and Meituan says it is the first trillion-parameter model trained […]