Which is better for coding — Qwen3.5-397B-A17B or Step-3.5-Flash?

Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.

Which model is cheaper — Qwen3.5-397B-A17B or Step-3.5-Flash?

API pricing data is available on the individual model pages.

Which has a larger context window — Qwen3.5-397B-A17B or Step-3.5-Flash?

Context window data is available on the individual model pages.

Qwen3.5-397B-A17B vs Step-3.5-Flash: Specs & Benchmark Comparison

Characteristic	Qwen3.5-397B-A17B	Step-3.5-Flash
Company	Alibaba	StepFun
Release Date	February 15, 2026	February 1, 2026
Parameters	397B	196B
Multimodal	Yes	Yes
Context (input)	—	66K
Context (output)	—	8K
Input Price / 1M	—	$0.10
Output Price / 1M	—	$0.40
Average Score	0.9	0.8

Verdict

Qwen3.5-397B-A17B leads in 1 out of 2 comparison categories.

Overall Performance

Both models show comparable average scores: Qwen3.5-397B-A17B — 0.9, Step-3.5-Flash — 0.8.

Recency

Qwen3.5-397B-A17B is newer: released 2/15/2026 vs 2/1/2026.

More About These Models

Qwen3.5-397B-A17B

Alibaba — specs, benchmarks, API

Step-3.5-Flash

StepFun — specs, benchmarks, API

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The Qwen3.5-397B-A17B and Step-3.5-Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Qwen3.5-397B-A17B or Step-3.5-Flash page. See also the complete list of AI model comparisons.