Alibaba: Qwen3.5 Plus 2026-02-15 API

The Qwen3.5 native vision-language series Plus models are built on a hybrid architecture that integrates linear attention mechanisms with sparse mixture-of-experts models, achieving higher inference efficiency. In a variety of task evaluations, the 3.5 series consistently demonstrates performance on par with state-of-the-art leading models. Compared to the 3 series, these models show a leap forward in both pure-text and multimodal capabilities.

• Context window: 1,000,000 tokens
• Max output: 65,536 tokens
• Input: text, image, video
• Output: text
• Reasoning: Supported
• Tool calling: Supported
• File input: Supported
• Released: 2026-02-14