Alibaba: qwen3.5-397b-a17b:free

qwen3.5-397b-a17b:free
262.1K context65.5K outReasoningToolsVisionVideoCacheStructured
Released Feb 16, 2026Updated Feb 16, 2026

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.

Mode chatTokenizer Qwen3

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Pricing

Input price
$0.00/ 1M tokens
Output price
$0.00/ 1M tokens
Context window 262.1K tokensCompatible endpoints openaiVendor Alibaba

Quick stats

Quantizationfp8

Performance

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Supported parameters

All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.

ParameterProvidersDefault
frequency_penaltySome providersNot sent by default
include_reasoningAll providers-
logit_biasSome providers-
logprobsSome providers-
max_tokensAll providers-
min_pSome providers-
presence_penaltySome providersNot sent by default
reasoningAll providers-
repetition_penaltySome providersNot sent by default
response_formatSome providers-
seedSome providers-
stopSome providers-
structured_outputsSome providers-
temperatureAll providers0.6
tool_choiceSome providers-
toolsSome providers-
top_kSome providers20
top_logprobsSome providers-
top_pAll providers0.95

Frequently asked questions

How much does qwen3.5-397b-a17b:free cost per 1M tokens?

Input is priced at $0.00 per 1M tokens, output at $0.00 per 1M tokens. Billing is per token, no rounding to batch sizes.

How do I access qwen3.5-397b-a17b:free via API?

Send requests to the UnoRouter /v1/chat/completions endpoint with model=qwen3.5-397b-a17b:free. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.

What is the context window of qwen3.5-397b-a17b:free?

qwen3.5-397b-a17b:free supports a context window of 262.1K tokens, shared between your prompt and the model's response.

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