Qwen3-Coder: 480B open agentic coder trained in 20,000 parallel environments

Alibaba's 480B-A35B model (Apache 2.0, 256K context) posts open-source SOTA on agentic coding, browser use, and tool use — comparable to Claude Sonnet 4. The RL-at-scale training recipe shows the open labs are innovating on method, not just replicating.