Alibaba: qwen-coder-plus:free

Qwen-coder-plus is the premier proprietary variant of the Qwen3-Coder series, built upon a massive 480-billion parameter Mixture-of-Experts (MoE) architecture with 35 billion active parameters. It is specifically engineered to be an "Agentic Coding" powerhouse, bridging the gap between simple code completion and autonomous software engineering. By integrating advanced long-horizon reinforcement learning, it excels at navigating complex codebases, executing tool-calls to debug environments, and planning multi-file refactors. It consistently achieves state-of-the-art results on benchmarks like SWE-bench, rivaling Claude 3.5 Sonnet in real-world programming efficiency.