China's Alibaba Releases Largest AI Model, Challenging US Supremacy

Alibaba released Qwen3.8-Max, which it says is its largest and most capable AI model to date, claiming performance rivaling the best from US labs Anthropic and OpenAI, as well as domestic rival Moonshot AI's Kimi K3. The release was expected after the company previewed the model last month, when it claimed it was 'second only to Fable 5,' Anthropic's flagship. Alibaba's own testing shows the model's performance broadly matches, and sometimes exceeds, that of Fable 5 on benchmarks. On the Arena text model leaderboard, Qwen3.8-Max trails only Fable 5 and three models in Anthropic's Opus family. For frontend coding, it is beaten only by two Claude Opus models and Kimi K3, and for visual analysis, only Fable 5 trounces it. Qwen3.8-Max has 2.4 trillion parameters, while Moonshot's Kimi K3 has 2.8 trillion; most top American labs keep such figures private. The company will release the weights next week, marking a return to open-weight releases after briefly pivoting to proprietary releases earlier this year. Open-weight releases have become the norm in China's AI industry and are championed by Beijing to grow influence and adoption. The release closely follows Kimi K3 and coincides with video generation models from ByteDance and MiniMax, intensifying rivalry with the US. Openness has become divisive, with the US industry largely supporting open-weight models amid potential crackdowns, while closed-model providers like OpenAI and Anthropic face scrutiny after cyberattacks by their own AI agents.