AlibabaQwenfastVisionTool use

Qwen3.5 397B A17B

The Qwen3.5 series 397B-A17B native vision-language model is built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. It delivers state-of-the-art performance comparable to leading-edge models across a wide range of tasks, including language understanding, logical reasoning, code generation, agent-based tasks, image understanding, video understanding, and graphical user interface (GUI) interactions.

262K context·~197K words·66K max output
Context window262Ktokens
Max output66Ktokens

Context window

This model accepts 262K tokens in one request (~197K words of text).

Context window size262K tokens
4K32K128K1M10M

What fits in one request

  • Short document
    About 1,500 words of text
    Fits
  • Long document
    About 37K words of text
    Fits
  • Small codebase
    About 150K words of text
    Fits
  • Full novel
    About 375K words of text
    Won't fit

Specifications

Context size, pricing, and release info in one place.

Context window
262,144 tokens (262K)
Max output tokens
65,536 tokens (66K)
Speed tier
fast
Provider
Alibaba
Model family
Qwen
Release date
Feb 2026
Input cost
$0.600/M / 1M tokens
Output cost
$3.60/M / 1M tokens

Capabilities

See which features this model supports, such as vision, tools, and streaming.

Supported (6)
Vision
Supported
Tool use
Supported
Function calling
Supported
Extended thinking
Supported
Streaming
Supported
Prompt caching
Supported
Not supported (2)
Web search
Not supported
Batch API
Not supported

Best for

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Frequently asked questions

Short answers about context size and how this model behaves.

Qwen3.5 397B A17B has a context window of 262K tokens (262,144 tokens). This large window is well-suited for long document analysis, extensive codebases, and multi-session agent workflows.

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