Model Comparison

Step 3.7 Flash
vs. Step 5 Preview

Comparing 2 AI models · 0 benchmarks · StepFun

Recommended Pick

Step 3.7 Flash5 metric wins

Strongest on: Input price, Output price, Blended price

Lowest Price

Step 3.7 Flash

$0.20/1M input price

Differences That Matter

Price gap

Step 3.7 Flash is 5.0x cheaper on input tokens than Step 5 Preview.

Speed gap

Step 3.7 Flash generates about 1.2x as many tokens per second as Step 5 Preview.

Top-pick rationale

Step 3.7 Flash wins 5 measurable categories, including Input price, Output price, Blended price, Throughput.

Live compare

Response Face-Off

Run one prompt through the selected models and compare response quality with live speed and cost context.

10 comparisons left in 24h

Step 3.7 Flash

StepFun

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Step 5 Preview

StepFun

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Full Comparison

Metric	Top Pick St Step 3.7 Flash StepFun	St Step 5 Preview StepFun
Pricing per 1M tokens
Input Cost	$0.20/1M	$1.00/1M
Output Cost	$1.15/1M	$2.70/1M
Blended (3:1)	$0.44/1M	$1.43/1M
Specifications
Organization	StepFun	StepFun
Release Date	May 29, 2026	Sep 18, 2026
Performance & Speed
Throughput	198.0 tok/s	161.2 tok/s
TTFT	2600ms	880ms
Latency	12700ms	13280ms
Composite Indices
Value Score	—	100.0
Reasoning Score	—	28.5
Intelligence	—	28.5