Model Comparison
Step 3.5 Flash 2603
vs. Step 3.5 Flash
Comparing 2 AI models · 0 benchmarks · StepFun
Recommended Pick
StStep 3.5 Flash 26033 metric winsStrongest on: Value, Reasoning, Intelligence
Best Value
Step 3.5 Flash 2603
100.0 value score
26.5 reasoning / $0.15/1M
Lowest Price
Step 3.5 Flash 2603
$0.10/1M input price
Best Reasoning
Step 3.5 Flash 2603
26.5 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Step 3.5 Flash 2603 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Speed gap
Step 3.5 Flash generates about 1.1x as many tokens per second as Step 3.5 Flash 2603.
Reasoning gap
Step 3.5 Flash 2603 leads Step 3.5 Flash by 0.5 points on reasoning.
Top-pick rationale
Step 3.5 Flash 2603 wins 3 measurable categories, including Value, Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Step 3.5 Flash 2603
StepFun
TTFT
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Time
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tok/s
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Cost
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Step 3.5 Flash
StepFun
TTFT
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Which answer was more useful?
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Full Comparison
| Metric | Top Pick St Step 3.5 Flash 2603 | St Step 3.5 Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.10/1M | $0.10/1M |
| Output Cost | $0.30/1M | $0.30/1M |
| Blended (3:1) | $0.15/1M | $0.15/1M |
| Specifications | ||
| Organization | StepFun | StepFun |
| Release Date | Apr 2, 2026 | Feb 2, 2026 |
| Performance & Speed | ||
| Throughput | 207.9 tok/s | 221.7 tok/s |
| TTFT | 1070ms | 1070ms |
| Latency | 10690ms | 10090ms |
| Composite Indices | ||
| Value Score | 100.0 | 98.1 |
| Reasoning Score | 26.5 | 26.0 |
| Intelligence | 26.5 | 26.0 |
Key Takeaways
Step 3.5 Flash 2603 offers the best value at $0.10/1M,making it ideal for high-volume applications and cost-conscious projects.
Step 3.5 Flash 2603 has the strongest reasoning profile with a 26.5 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Step 3.5 Flash 2603
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
Step 3.5 Flash
- General-purpose AI
- Versatile applications
