Alibaba: qwen3-coder-480b-a35b-instruct:free

The flagship Mixture-of-Experts (MoE) coding model released by Alibaba Cloud on July 22, 2025. As the most powerful variant in the Qwen3-Coder family, it boasts a staggering 480 billion (480B) total parameters while maintaining efficiency by activating only 35 billion (35B) parameters per token. Defined as the "Most Agentic Coding Model," it excels not only in code generation but also in autonomous debugging, repository-scale refactoring, and multi-step tool use. Through extensive Agentic Reinforcement Learning, its performance rivals or surpasses proprietary giants like Claude 4 and GPT-4o. It stands as the 2026 industry benchmark for handling complex, large-scale software engineering tasks in an open-source format.