Alibaba Introduces Qwen3, Setting New Benchmark in Open-Source AI with Hybrid Reasoning

The Qwen3 series features six dense models and two Mixture-of-Experts (MoE) models, offering developers flexibility to build next-generation applications across mobile devices, smart glasses, autonomous vehicles, robotics and beyond.

All Qwen3 models – including dense models (0.6B, 1.7B, 4B, 8B, 14B, and 32B parameters) and MoE models (30B with 3B active, and 235B with 22B active) – are now open sourced and available globally.

Hybrid Reasoning Combining Thinking and Non-thinking Modes

Qwen3 marks Alibaba’s debut of hybrid reasoning models, combining traditional LLM capabilities with advanced, dynamic reasoning. Qwen3 models can seamlessly switch between thinking mode for complex, multi-step tasks such as mathematics, coding, and logical deduction and non-thinking mode for fast, general-purpose responses.

For developers accessing Qwen3 through API, the model offers granular control over thinking duration (up to 38K tokens), enabling an optimized balance between intelligent performance and compute efficiency. Notably, the Qwen3-235B-A22B MoE model significantly lowers deployment costs compared to other state-of-the-art models, reinforcing Alibaba’s commitment to accessible, high-performance AI.

Breakthroughs in Multilingual Skills, Agent Capabilities, Reasoning and Human Alignment

Trained on a massive dataset of 36 trillion tokens – double that of its predecessor Qwen2.5 — Qwen3 delivers significant advancement on reasoning, instruction following, tool use and multilingual tasks.

Key capabilities include:

• Multilingual Mastery: Supports 119 languages and dialects, with leading performance in translation and multilingual instruction-following.
• Advanced Agent Integration: Natively supports the Model Context Protocol (MCP) and robust function-calling, leading open-source models in complex agent-based tasks.
• Superior Reasoning: Surpasses previous Qwen models (QwQ in thinking mode and Qwen2.5 in non-thinking mode) in mathematics, coding, and logical reasoning benchmarks.
• Enhanced Human Alignment: Delivers more natural creative writing, role-playing, and multi-turn dialogue experiences for more natural, engaging conversations.

Thanks to advancements in model architecture, increase in training data, and more effective training methods, Qwen3 models achieve top-tier results across industry benchmarks such as AIME25 (mathematical reasoning), LiveCodeBench (coding proficiency), BFCL (tool and function-calling capabilities), and Arena-Hard (benchmark for instruction-tuned LLMs). Additionally, to develop the hybrid reasoning model, a four-stage training process was implemented, which includes long chain-of-thought (CoT) cold start, reasoning-based reinforcement learning (RL), thinking mode fusion, and general RL.

Open Access to Drive Innovation

Qwen3 models are now freely available for download on Hugging Face, GitHub and ModelScope, and can be explored on chat.qwen.ai. API access will soon be available through Alibaba’s AI model development platform Model Studio. Qwen3 also powers Alibaba’s flagship AI super assistant application, Quark.

Since its debut, the Qwen model family has attracted over 300 million downloads worldwide. Developers have created more than 100,000 Qwen-based derivative models on Hugging Face, making Qwen one of the world’s most widely adopted open-source AI model series.
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About Alibaba Group

Alibaba Group’s mission is to make it easy to do business anywhere. The company aims to build the future infrastructure of commerce. It envisions that its customers will meet, work and live at Alibaba, and that it will be a good company that lasts for 102 years. www.alibabagroup.com