Alibaba's Qwen3.6-Max-Preview Challenges GPT-5.4 on Agentic Coding

TL;DR: Qwen3.6-Max-Preview is Alibaba's new proprietary flagship, released April 20, 2026. No open weights — API only. It tops six agentic coding benchmarks including SWE-bench Pro and Terminal-Bench 2.0. On Terminal-Bench 2.0, it ties Claude Opus 4....