Qwen3.5-Plus Open-Sourced on the Eve of Chinese New Year, Ranking as the World's Strongest Open-Source Large Model

On the eve of Chinese New Year in 2026, Alibaba opened-source the new generation large model Qwen3.5-Plus, whose performance rivals that of Gemini3Pro, becoming the world's strongest open-source large model. The model adopts a revolutionary underlying architecture, with 397 billion parameters but only 17 billion activated, surpassing the Qwen3-Max with trillions of parameters at a smaller scale. The deployment memory usage is reduced by 60%, and the long context reasoning throughput is increased by 19 times. The API cost is as low as 0.8 yuan per million Tokens, just 1/18th of Gemini3Pro.