Qwen3-Coder Is Here: A 480B Parameter Open-Source Coding Model

Qwen just dropped Qwen3-Coder, the most powerful open-source coding model challenges Anthropic's Claude 4 Sonnet.

Alibaba’s Qwen team just released its most advanced code model to date. It’s called Qwen3-Coder, and it comes in multiple sizes. But the biggest version, built with 480 billion parameters, sets a new standard among open-source models for coding, browser use, and tool interaction. Its performance is strong enough to draw comparisons to Claude 4 Sonnet.

If you’re a developer who’s using Claude 4 Sonnet in tools like Cursor or Claude Code, you’d be happy to know about this new open-source model. There has been a growing frustration in the community lately, mostly due to recent rate limits and performance drops from the Claude models. Many developers started looking elsewhere, and now Qwen3-Coder is here with really good benchmarks and open access.

The big question now is whether Qwen3-Coder is good enough to challenge Claude’s dominance in real-world vibe coding workflows.

What is Qwen3-Coder?