vLLM has a new streaming parser for Qwen3+ available in nightly

The new parser reportedly fixes the issues many were seeing with Qwen3.6-27b stopping mid turn, as well as failing streaming tool calls due to chunk boundaries.

The mid turn stopping is especially annoying when trying to use the model for agentic workflows. I've not seen it happen anymore in the limited testing I've done this evening, fingers crossed that is gone for good!