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Qwen: Qwen3.5-35B-A3B vs StepFun: Step 3.5 Flash

Head-to-head API cost, context, and performance comparison. Synced at 11:16:51 AM.

Executive Summary

When evaluating Qwen: Qwen3.5-35B-A3B against StepFun: Step 3.5 Flash, the pricing structure is a key differentiator. StepFun: Step 3.5 Flash is approximately 73% more cost-effective per 1 million tokens overall.

However, when looking at raw reasoning capabilities, StepFun: Step 3.5 Flash leads with a statistical ELO score of 1150. For tasks involving complex logic, coding, or instruction-following, developers might prefer StepFun: Step 3.5 Flash, provided their budget allows for the API burn rate.

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Raw Technical comparison

Metric
Qwen: Qwen3.5-35B-A3B
StepFun: Step 3.5 Flash
Performance (ELO)
1150
1150
Input Cost / 1M
$0.16
$0.10
Output Cost / 1M
$1.30
$0.30
Context Window
262,144 tokens
256,000 tokens

Verdict

If you are looking for pure performance and capability, Tie is statistically superior. However, if API burn rate is the primary concern, StepFun: Step 3.5 Flash wins out aggressively in pricing.

People Also Ask

Is Qwen: Qwen3.5-35B-A3B cheaper than StepFun: Step 3.5 Flash?

No. StepFun: Step 3.5 Flash is the more cost-effective model, operating at a lower price point per 1 million tokens.

Which model has the larger context window?

The Qwen: Qwen3.5-35B-A3B model has the advantage in memory, offering a massive 262,144 token limit for document ingestion.

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