Qwen3.5 Plus 2026-02-15

Qwen3.5 Plus 2026-02-15 is Alibaba's mid-tier language model from the Qwen3.5 generation with a 1 million token context window.

Strengths

Balances inference speed and reasoning capability across a broad range of tasks while maintaining a large context window.

Best for

Applications requiring extended context and moderate computational overhead, such as long-document analysis and multi-turn conversations.

Limitations

Superseded in April 2026 by an updated release; larger models in the lineup offer greater reasoning depth while smaller models provide faster inference.