Alibaba Opens Qwen Code 1.0 Preview With Shared Agent Runtime

Alibaba’s Qwen Code 1.0 Preview brings the harness capabilities developed for Qoder and Qwen Code into one open-source core, giving developers a runtime foundation they can embed in their own products.

A harness connects an AI model to its tools and manages the processes that run them. In the preview, reasoning coordination is separate from tool execution. The design begins with an event bus that operates inside one process and keeps events in memory, with separate access, scheduling and execution layers supporting its planned move toward distributed operation.

The preview is available on a separate branch. Qwen Code’s existing stable branch remains available alongside it.