Model Comparison
Solar Mini 4
vs. Step 3.7 Flash
Comparing 2 AI models · 0 benchmarks · Upstage, StepFun
Recommended Pick
UpSolar Mini 47 metric winsStrongest on: Value, Input price, Output price
Best Value
Solar Mini 4
100.0 value score
24.1 reasoning / $0.18/1M
Lowest Price
Solar Mini 4
$0.10/1M input price
Best Reasoning
Solar Mini 4
24.1 reasoning score
Blends available reasoning benchmarks
Best for Coding
Step 3.7 Flash
39.6 coding index
Differences That Matter
Best value
Solar Mini 4 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Solar Mini 4 is 2.0x cheaper on input tokens than Step 3.7 Flash.
Speed gap
Step 3.7 Flash generates about 2.3x as many tokens per second as Solar Mini 4.
Reasoning gap
Solar Mini 4 leads Step 3.7 Flash by 4.6 points on reasoning.
Top-pick rationale
Solar Mini 4 wins 7 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Mini 4
Upstage
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Step 3.7 Flash
StepFun
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Top Pick Up Solar Mini 4 | St Step 3.7 Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.10/1M | $0.20/1M |
| Output Cost | $0.40/1M | $1.15/1M |
| Blended (3:1) | $0.18/1M | $0.44/1M |
| Specifications | ||
| Organization | Upstage | StepFun |
| Release Date | Sep 22, 2026 | May 29, 2026 |
| Performance & Speed | ||
| Throughput | 81.1 tok/s | 186.9 tok/s |
| TTFT | 1840ms | 2570ms |
| Latency | 26510ms | 13270ms |
| Composite Indices | ||
| Value Score | 100.0 | 32.4 |
| Reasoning Score | 24.1 | 19.5 |
| Intelligence | 24.1 | 19.5 |
| Coding | — | 39.6 |
Key Takeaways
Solar Mini 4 offers the best value at $0.10/1M,making it ideal for high-volume applications and cost-conscious projects.
Solar Mini 4 has the strongest reasoning profile with a 24.1 reasoning score,combining the available reasoning-heavy benchmarks.
Step 3.7 Flash reaches a 39.6 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Solar Mini 4
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
Step 3.7 Flash
- Code generation
- Software development
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