Model Comparison

Solar Pro 4
vs. Step 5 Preview

Comparing 2 AI models · 0 benchmarks · Upstage, StepFun

Recommended Pick

Step 5 Preview3 metric wins

Strongest on: Throughput, TTFT, Latency

Lowest Price

Solar Pro 4

$0.30/1M input price

Differences That Matter

Price gap

Solar Pro 4 is 3.3x cheaper on input tokens than Step 5 Preview.

Speed gap

Step 5 Preview generates about 1.9x as many tokens per second as Solar Pro 4.

Top-pick rationale

Step 5 Preview wins 3 measurable categories, including Throughput, TTFT, Latency.

Live compare

Response Face-Off

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

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Solar Pro 4

Upstage

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Step 5 Preview

StepFun

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Full Comparison

Metric	Up Solar Pro 4 Upstage	Top Pick St Step 5 Preview StepFun
Pricing per 1M tokens
Input Cost	$0.30/1M	$1.00/1M
Output Cost	$1.20/1M	$2.70/1M
Blended (3:1)	$0.52/1M	$1.43/1M
Specifications
Organization	Upstage	StepFun
Release Date	Aug 6, 2026	Sep 18, 2026
Performance & Speed
Throughput	84.0 tok/s	161.2 tok/s
TTFT	1910ms	880ms
Latency	25720ms	13280ms
Composite Indices
Value Score	—	100.0
Reasoning Score	—	28.5
Intelligence	—	28.5