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qwen/qwen3-5-397b-a17b
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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. With its robust code-generation and agent capabilities, the model exhibits strong generalization across diverse agent.

2/16/2026
262,144 tokens

Specifications

Modalities

Input
text
image
video
Output
text

Supported Parameters

frequency_penalty
include_reasoning
logit_bias
max_tokens
min_p
presence_penalty
reasoning
repetition_penalty
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p

Max Output Tokens

65,536

Frequently asked questions

Is Qwen3.5 397B A17B available on FastMetal?
Not at the moment. Qwen3.8 Max (0902), from the same lab, is available on the FastMetal API today.
What is the context window of Qwen3.5 397B A17B?
262,144 tokens, shared between the prompt and the response.