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 26034 metric winsStrongest on: Value, TTFT, Reasoning
Best Value
Step 3.5 Flash 2603
100.0 value score
17.0 reasoning / $0.15/1M
Lowest Price
Step 3.5 Flash 2603
$0.10/1M input price
Best Reasoning
Step 3.5 Flash 2603
17.0 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.
Reasoning gap
Step 3.5 Flash 2603 leads Step 3.5 Flash by 0.4 points on reasoning.
Top-pick rationale
Step 3.5 Flash 2603 wins 4 measurable categories, including Value, TTFT, 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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Tokens
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Cost
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Step 3.5 Flash
StepFun
TTFT
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Time
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tok/s
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Tokens
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Cost
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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 | 144.7 tok/s | 145.1 tok/s |
| TTFT | 3330ms | 3340ms |
| Latency | 17150ms | 17120ms |
| Composite Indices | ||
| Value Score | 100.0 | 97.6 |
| Reasoning Score | 17.0 | 16.6 |
| Intelligence | 17.0 | 16.6 |
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 17.0 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
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