Qwen3-CoderOpen Weight
Qwen3-Coder is an AI model released by Qwen on Tuesday, Jul 22 2025, 84 days after Qwen3. It is an open-weight model — the trained weights are available to download and run. It is a 480B parameter model with a 256k token context window.
About Qwen3-Coder
Qwen3-Coder, released July 22, 2025, was Alibaba's largest open-weight model to that point: a 480B-parameter mixture-of-experts model with 35B active, built specifically for agentic coding rather than code completion. It shipped with a 256K-token native context window, extensible to roughly 1M through positional extrapolation, so a whole repository could sit inside a single prompt.
It arrived alongside Qwen Code, a command-line agent forked from Google's Gemini CLI, which signalled what the model was for — long multi-step tool-using sessions rather than single-shot completions. Released the same month as Kimi K2 and GLM-4.5, it formed part of a mid-2025 cluster of Chinese open-weight agentic models that reset what freely downloadable weights were expected to do, and a smaller Qwen3-Coder-Flash followed for latency-sensitive work.
Qwen3-Coder — frequently asked questions
- When was Qwen3-Coder released?
- Qwen3-Coder was released by Qwen on Tuesday, Jul 22 2025.
- Who made Qwen3-Coder?
- Qwen3-Coder was built by Qwen. Alibaba's AI lab, building the Qwen family. The most prolific publisher of open-weight models of any major lab, alongside a proprietary Max and Plus tier sold through Alibaba Cloud.
- What is the context window of Qwen3-Coder?
- Qwen3-Coder has a context window of 256k. That is the maximum amount of input plus output the model can hold in a single request.
- How many parameters does Qwen3-Coder have?
- Qwen3-Coder is reported at 480B parameters.
- Is Qwen3-Coder open source?
- Partly. Qwen3-Coder is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.
- What came before and after Qwen3-Coder?
- Qwen's previous tracked release was Qwen3 on Apr 29 2025, 84 days earlier. It was followed by Qwen3-Next on Sep 11 2025.