Model Comparison
Qwen3 8B (Non-reasoning)
vs. Step 3.5 Flash
Comparing 2 AI models · 0 benchmarks · Alibaba, StepFun
Recommended Pick
StStep 3.5 Flash2 metric winsStrongest on: Input price, Blended price
Lowest Price
Step 3.5 Flash
$0.10/1M input price
Differences That Matter
Price gap
Step 3.5 Flash is 2.0x cheaper on input tokens than Qwen3 8B (Non-reasoning).
Top-pick rationale
Step 3.5 Flash wins 2 measurable categories, including Input price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Qwen3 8B (Non-reasoning)
Alibaba
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Step 3.5 Flash
StepFun
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Al Qwen3 8B (Non-reasoning) | Top Pick St Step 3.5 Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.20/1M | $0.10/1M |
| Output Cost | $0.20/1M | $0.30/1M |
| Blended (3:1) | $0.20/1M | $0.15/1M |
| Specifications | ||
| Organization | Alibaba | StepFun |
| Release Date | Apr 28, 2025 | Feb 2, 2026 |
| Performance & Speed | ||
| Throughput | — | 161.4 tok/s |
| TTFT | — | 3370ms |
| Latency | — | 15760ms |
Key Takeaways
Step 3.5 Flash offers the best value at $0.10/1M,making it ideal for high-volume applications and cost-conscious projects.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Qwen3 8B (Non-reasoning)
- General-purpose AI
- Versatile applications
Step 3.5 Flash
- Cost-sensitive applications
- High-volume processing
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