Model Comparison
Qwen3 Max (Preview)
vs. Step 3.5 Flash 2603
Comparing 2 AI models · 0 benchmarks · Alibaba, StepFun
Recommended Pick
StStep 3.5 Flash 26038 metric winsStrongest on: Value, Input price, Output price
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.
Price gap
Step 3.5 Flash 2603 is 12x cheaper on input tokens than Qwen3 Max (Preview).
Speed gap
Step 3.5 Flash 2603 generates about 3.5x as many tokens per second as Qwen3 Max (Preview).
Reasoning gap
Step 3.5 Flash 2603 leads Qwen3 Max (Preview) by 7.1 points on reasoning.
Top-pick rationale
Step 3.5 Flash 2603 wins 8 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.
Qwen3 Max (Preview)
Alibaba
TTFT
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tok/s
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Step 3.5 Flash 2603
StepFun
TTFT
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Which answer was more useful?
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OpenAI-compatible inference
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Full Comparison
| Metric | Al Qwen3 Max (Preview) | Top Pick St Step 3.5 Flash 2603 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.20/1M | $0.10/1M |
| Output Cost | $6.00/1M | $0.30/1M |
| Blended (3:1) | $2.40/1M | $0.15/1M |
| Specifications | ||
| Organization | Alibaba | StepFun |
| Release Date | Sep 5, 2025 | Apr 2, 2026 |
| Performance & Speed | ||
| Throughput | 59.1 tok/s | 205.0 tok/s |
| TTFT | 3980ms | 1060ms |
| Latency | 3980ms | 10810ms |
| Composite Indices | ||
| Value Score | 4.6 | 100.0 |
| Reasoning Score | 19.4 | 26.5 |
| Intelligence | 19.4 | 26.5 |
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
Qwen3 Max (Preview)
- General-purpose AI
- Versatile applications
Step 3.5 Flash 2603
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
