meituan released longcat-2.0, a 1.6 trillion parameter mixture-of-experts model with 48 billion active parameters trained on 30 trillion tokens, using a 50,000-card domestic chinese chip cluster without us-export-controlled hardware. the model achieves competitive performance on agentic coding benchmarks. a frontier-scale model produced entirely on domestic silicon challenges the foundational assumption that us export controls on advanced chips can constrain chinese ai capability development.