Qwen Coder

Qwen Coder is a state-of-the-art (SOTA) open-source code LLM: it delivers agentic coding, multi-language generation, and complex code repair, rivaling proprietary models like GPT-4o and Claude Sonnet 4.

This is a powerful, multi-variant code foundation model, with the flagship Qwen3-Coder-480B-A35B-Instruct utilizing a Mixture-of-Experts (MoE) architecture. It is purpose-built for agentic coding: handling full engineering workflows, not just isolated code snippets. The model natively supports a 256K context window (extensible to 1M) and excels across 40+ programming languages, achieving frontier performance on complex benchmarks like SWE-Bench and Aider.

https://github.com/QwenLM/Qwen3-Coder