Qwen 3.5 Plus is Alibaba's advanced multimodal model combining a context window of 1M tokens with strong scientific reasoning, visual analysis, and adaptive tool use for complex agentic workflows.
import { streamText } from 'ai'
const result = streamText({ model: 'alibaba/qwen3.5-plus', prompt: 'Why is the sky blue?'})Qwen 3.5 Plus sits at the top of the production-hosted Qwen3.5 lineup, offering deeper reasoning and stronger performance on scientific problem-solving, visual question answering, and frontend code generation from specifications. Like the Flash variant it is built on the Qwen3.5 hybrid linear-attention MoE backbone, but it is tuned for accuracy-first workloads where additional computation per token is warranted.
The model was highlighted for converting complex visual or textual specifications, such as design mockups, mathematical notation, or multi-document briefs, into functional code or structured analysis. Its context window of 1M tokens enables practitioners to pass entire repositories, research papers, or legal documents without chunking, while the adaptive tool use system lets the model decide when to invoke external APIs or search tools during a single agentic session.
Supported modalities include text, images, and video, all processed natively through the same architecture. Structured outputs, tool calling, and configurable reasoning depth are available, allowing teams to tune the model's behavior from rapid instruction-following to deep deliberate reasoning depending on the use case.