Question 1

What does this Qwen3.5 397B-A17B vs Claude Opus 4.5 comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: Qwen3.5 397B-A17B or Claude Opus 4.5?

Accepted Answer

Qwen3.5 397B-A17B lists $0.60 input and $3.60 output per 1M tokens. Claude Opus 4.5 lists $5.00 input and $25.00 output. The cheaper workload depends on the mix of input and output. Long-context tiers, caching, batch processing and retries can change the bill.

Question 3

Which has the larger context window: Qwen3.5 397B-A17B or Claude Opus 4.5?

Accepted Answer

Qwen3.5 397B-A17B lists 262.14K tokens and Claude Opus 4.5 lists 200K. Qwen3.5 397B-A17B therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Qwen3.5 397B-A17B or Claude Opus 4.5?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do Qwen3.5 397B-A17B and Claude Opus 4.5 support?

Accepted Answer

Qwen3.5 397B-A17B records text, image, video, audio input and text output. Claude Opus 4.5 records text, image, pdf input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose Qwen3.5 397B-A17B or Claude Opus 4.5?

Accepted Answer

Consider Qwen3.5 397B-A17B if you need larger context or larger maximum output or a lower listed input rate or a lower listed output rate. Qwen3.5 397B-A17B offers downloadable weights; Claude Opus 4.5 is listed as a proprietary model. Compare licence terms and operating costs before choosing a deployment. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	Qwen3.5 397B-A17B	Claude Opus 4.5
Provider	Alibaba	Anthropic
Listed pricing route	Alibaba	Anthropic
Model family	qwen	claude-opus
Accepted inputs	text, image, video, audio	text, image, pdf
Produced outputs	text	text
Context window	262.14KHigher	200K
Max output	65.54KHigher	64K
Input price / 1M	$0.60Lower	$5.00
Output price / 1M	$3.60Lower	$25.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Documented	Documented
Audio input	Documented	Not documented
Structured output	Documented	Not documented
License	Open weights	Proprietary

Qwen3.5 397B-A17B vs Claude Opus 4.5

Qwen3.5 397B-A17B

Claude Opus 4.5

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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