量子位·2026-02-16 11:00Core Viewpoint - Alibaba's new AI model Qwen3.5-Plus has been released, claiming the title of the strongest open-source model, outperforming many closed-source models in various benchmarks [1][3]. Performance and Features - Qwen3.5-Plus has 397 billion parameters, with only 17 billion activated during inference, yet it outperforms the trillion-parameter Qwen3-Max [4]. - The model reduces deployment memory usage by 60% and increases maximum inference throughput by up to 19 times, significantly optimizing deployment costs and efficiency [5][60]. - Qwen3.5-Plus achieves state-of-the-art performance across multiple dimensions, including reasoning and programming, with a score of 87.8 on the MMLU-Pro test, surpassing GPT-5.2 [17]. Accessibility and Pricing - The API pricing for Qwen3.5 is highly competitive, with input costs as low as 0.8 yuan per million tokens, which is 1/18 of the cost of similar models like Gemini-3-Pro [9]. - The model supports 201 languages, expanding its vocabulary from 150k to 250k, and improves encoding efficiency for less common languages by 60% [9]. Technological Innovations - Qwen3.5-Plus incorporates several key technological advancements, including a mixed attention mechanism that dynamically allocates computational resources based on the importance of information [53]. - The model employs a sparse MoE architecture, activating only 17 billion parameters during inference, which significantly reduces computational costs while retaining knowledge advantages [55]. - A native multi-token prediction mechanism allows for batch output, nearly doubling inference speed compared to traditional models [56]. Multi-Modal Capabilities - Qwen3.5-Plus is designed for native multi-modal understanding, processing text and visual data simultaneously without the need for separate alignment networks [64]. - The model can handle long video inputs of up to 2 hours, enabling precise analysis and summarization of lengthy content [26]. Market Position and Impact - Since its inception, Alibaba has open-sourced over 400 models, achieving over 1 billion downloads globally, and establishing itself as a leader in the AI model space [71][72]. - The competitive pricing and open-source nature of Qwen3.5-Plus aim to democratize access to advanced AI technologies, similar to the paths taken by Linux and Android in their respective domains [73].