Meituan open-sources LongCat-2.0 with 1.6T parameters

Meituan open-sourced LongCat-2.0, a 1.6 trillion parameter AI model trained entirely on more than 50,000 domestically made AI ASICs, with no Nvidia hardware. The training covered over 35 trillion tokens. On SWE-bench Pro and SWE-bench Multilingual, LongCat-2.0 beats Gemini 3.1 Pro and GPT-5.5 but trails Claude Opus 4.7 and 4.8.