Which is cheaper, Qwen3.5-397B-A17B or Step-3.5-Flash?
As of August 26, 2026, Step-3.5-Flash is 88% cheaper on blended LLM API pricing. Step-3.5-Flash costs $0.10 per million input tokens and $0.40 per million output tokens ($0.50 blended 1M-in + 1M-out). Qwen3.5-397B-A17B costs $0.60 / $3.60 per million tokens ($4.20 blended). Sources: https://bailian.console.aliyun.com/ and https://anotherwrapper.com/tools/llm-pricing. The cheapest LLM for your app still depends on how many output tokens you generate.
How much does Qwen3.5-397B-A17B vs Step-3.5-Flash cost per million tokens?
Qwen3.5-397B-A17B Qwen API pricing is $0.60 input and $3.60 output per million tokens via Qwen. Step-3.5-Flash StepFun API pricing is $0.10 input and $0.40 output per million tokens via StepFun. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Which is better for coding, Qwen3.5-397B-A17B or Step-3.5-Flash?
Qwen3.5-397B-A17B leads on SWE-bench Verified: Qwen3.5-397B-A17B at 76.4% vs Step-3.5-Flash at 74.4%. SWE-bench measures real GitHub fixes; LiveCodeBench measures contest programming.
What is the context window for Qwen3.5-397B-A17B vs Step-3.5-Flash?
Qwen3.5-397B-A17B supports a 262K token context window, while Step-3.5-Flash supports 66K tokens. Qwen3.5-397B-A17B offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Which model performs better on benchmarks, Qwen3.5-397B-A17B or Step-3.5-Flash?
Qwen3.5-397B-A17B and Step-3.5-Flash are tied across 6 shared benchmarks. Check the table for category-level strengths. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Is Qwen3.5-397B-A17B or Step-3.5-Flash better for production use?
Both Qwen3.5-397B-A17B and Step-3.5-Flash are production API models. For cost-sensitive production traffic, Step-3.5-Flash has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Can I switch between Qwen3.5-397B-A17B and Step-3.5-Flash in my app?
Yes. Call Qwen3.5-397B-A17B through Qwen and Step-3.5-Flash through StepFun with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
How accurate is this Qwen3.5-397B-A17B vs Step-3.5-Flash pricing data?
List rates are the latest published Qwen API pricing and StepFun API pricing, quoted per million tokens. Official rate sheets: https://bailian.console.aliyun.com/ and https://anotherwrapper.com/tools/llm-pricing. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
What is the output token limit for Qwen3.5-397B-A17B and Step-3.5-Flash?
Qwen3.5-397B-A17B supports up to 64K output tokens per request, while Step-3.5-Flash supports up to 8K output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Which model has better throughput, Qwen3.5-397B-A17B or Step-3.5-Flash?
Step-3.5-Flash has a measured throughput of approximately 150 tokens/second. Throughput data for Qwen3.5-397B-A17B is not yet available. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
How do I switch the models in this Qwen3.5-397B-A17B vs Step-3.5-Flash comparison?
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open Qwen3.5-397B-A17B or Step-3.5-Flash from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
