Chinese labs Moonshot and Alibaba open-weight frontier-scale models as US rivals stay proprietary

Moonshot released Kimi K3 (2.8 trillion parameters) and Alibaba previewed Qwen3.8 (2.4 trillion), both as open-weight. Leading US labs OpenAI and Anthropic keep their frontier models proprietary and do not disclose parameter counts. The two Chinese models claim performance near the US frontier, though those rankings are self-reported and await independent verification.