Model Comparison
Qwen3.6 35B A3B (Reasoning)
vs. Step 3.5 Flash 2603
Comparing 2 AI models · 7 benchmarks · Alibaba, StepFun
Recommended Pick
StStep 3.5 Flash 260310 metric winsStrongest on: Value, Input price, Output price
Best Value
Step 3.5 Flash 2603
100.0 value score
43.7 reasoning / $0.15/1M
Lowest Price
Step 3.5 Flash 2603
$0.10/1M input price
Best Reasoning
Qwen3.6 35B A3B (Reasoning)
45.3 reasoning score
Blends available reasoning benchmarks
Best for Coding
Qwen3.6 35B A3B (Reasoning)
41.9 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
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 2.5x cheaper on input tokens than Qwen3.6 35B A3B (Reasoning).
Speed gap
Step 3.5 Flash 2603 generates about 1.6x as many tokens per second as Qwen3.6 35B A3B (Reasoning).
Reasoning gap
Qwen3.6 35B A3B (Reasoning) leads Step 3.5 Flash 2603 by 1.6 points on reasoning.
Top-pick rationale
Step 3.5 Flash 2603 wins 10 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.
Qwen3.6 35B A3B (Reasoning)
Alibaba
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 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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Which answer was more useful?
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Full Comparison
| Metric | Al Qwen3.6 35B A3B (Reasoning) | Top Pick St Step 3.5 Flash 2603 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.25/1M | $0.10/1M |
| Output Cost | $1.49/1M | $0.30/1M |
| Blended (3:1) | $0.56/1M | $0.15/1M |
| Specifications | ||
| Organization | Alibaba | StepFun |
| Release Date | Apr 16, 2026 | Apr 2, 2026 |
| Performance & Speed | ||
| Throughput | 127.1 tok/s | 201.9 tok/s |
| TTFT | 1200ms | 833ms |
| Latency | 43639ms | 10739ms |
| Composite Indices | ||
| Value Score | 27.9 | 100.0 |
| Reasoning Score | 45.3 | 43.7 |
| Intelligence | 31.6 | 26.0 |
| Coding | 41.9 | — |
| Standard Benchmarks | ||
| GPQA | 84.1% | 82.6% |
| HLE | 20.2% | 22.6% |
| SciCode | 35.8% | 38.5% |
| LCR | 63.7% | 54.3% |
| IFBench | 64.4% | 66.5% |
| TAU-bench v2 | 95.3% | 87.4% |
| TerminalBench Hard | 34.8% | 32.6% |
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.
Qwen3.6 35B A3B (Reasoning) has the strongest reasoning profile with a 45.3 reasoning score,combining the available reasoning-heavy benchmarks.
Qwen3.6 35B A3B (Reasoning) reaches a 41.9 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
Qwen3.6 35B A3B (Reasoning)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Step 3.5 Flash 2603
- Cost-sensitive applications
- High-volume processing
