Alibaba released Qwen3.8-Max, which it calls its largest and "most capable AI model to date," claiming performance that rivals Anthropic's Claude Fable 5, OpenAI systems, and Moonshot AI's Kimi K3. The model is now widely available to users.
Alibaba's own testing shows the model matches or exceeds Fable 5 on benchmark tests. 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 outperforms it.
Qwen3.8-Max has 2.4 trillion parameters, compared to Moonshot's Kimi K3 which has 2.8 trillion. Alibaba says it will release the model weights next week, marking a return to open-weight releases after pivoting to proprietary releases for advanced models earlier this year.