Alibaba’s Qwen team releases Qwen3-Coder-480B-A35B-Instruct — a mixture-of-experts model with 480 billion total parameters, 35 billion active — built specifically for agentic coding: long-horizon, multi-turn tool use across repositories, with a 256K context window extensible to a million tokens.

The claimed results put it at the top of open-model coding benchmarks and in the neighborhood of Claude Sonnet 4 on agentic evaluations — the comparison every coding model now measures itself against. It ships alongside an open-sourced CLI tool, an unsubtle signal about where Qwen thinks coding is going: not autocomplete, but delegation.