Qianwen 3.5 Released, Tops the World as the Strongest Open-Source Large Model

Continuing the tradition of releasing Qwen2.5-Max on New Year’s Eve last year, on the same occasion, Alibaba has open-sourced a new generation large model, Qwen3.5-Plus, which rivals Gemini 3 Pro in performance and tops the list of the world’s most powerful open-source large models.

Compared to previous Qwen models, it has achieved a comprehensive overhaul of the underlying model architecture, simply put, “smarter, more efficient, and more cost-effective.”

The newly released Qwen3.5-Plus version has a total of 397 billion parameters, with only 17 billion activated, outperforming the Qwen3-Max model with over a trillion parameters. Deployment memory usage has been reduced by 60%, inference efficiency has been significantly improved, and maximum inference throughput can be increased up to 19 times. The API price for Qwen3.5-Plus is as low as 0.8 yuan per million tokens, only 1/18 of Gemini 3 Pro.

Unlike previous generations of Qwen large language models, Qwen3.5 has achieved an generational leap from a pure text model to a native multimodal model.

It is reported that the Qwen3.5-Plus model has been integrated into the Qwen App and PC versions immediately. Developers can download the new model from the Moda Community and HuggingFace, or directly access API services through Alibaba Cloud Bailing. Alibaba will soon continue to open-source different sizes and functionalities of the Qwen3.5 series models. The more powerful flagship model, Qwen3.5-Max, will also be released soon. (Reporter: Shen Jihui)