Qwen
Qwen is the Chat engine for Qwen models on the Alibaba Model Studio cloud plan, in Chat — /chat?engine=qwen.

What it does
Section titled “What it does”A dedicated engine (text in, text out) talking to the Model Studio chat API, with the shared Chat / History / Workspace tabs and Settings panel. This is the cloud Qwen — not Ollama; a Qwen model you pull locally appears under the Local engine instead. It is also distinct from the Qwen Code engine (/chat?engine=qwen-cli), which uses the agentic qwen CLI with real file tools.
Key actions
Section titled “Key actions”- Chat — send prompts, resume past threads, browse Sessions, read the Telemetry row.
Requires the Model Studio cloud plan key QWEN_CLOUD_KEY in .env.local (from Alibaba Model Studio), then restart the server. One plan feeds both the Qwen and DeepSeek engines. Without it, this engine reads “no cloud plan” — pull a Qwen model into Ollama and use the Local engine instead:
ollama pull qwen2.5-coder:7b- Do not confuse this engine with the Qwen Code agent CLI.
See also
Section titled “See also”-
Chat — the window this engine answers in.