Meituan Open-Sources a 1.6 Trillion-Parameter Agent
LongCat-2.5 is trained and served on domestic compute end to end, which is the part that matters commercially.
Meituan released LongCat-2.5 as open source, a natively multimodal long-horizon agent model with 1.6 trillion total parameters, according to a Beijing science agency roundup on 10 November 2026. It reports outperforming overseas models on several of nine benchmarks spanning web browsing, automated operation and 3D code generation, and says it completed full-stack optimisation of long-context training and inference on domestic compute. If those claims hold, the model lowers the cost floor for domestic agent products, with e-commerce operations and RPA the most obvious beneficiaries.
