Model Comparison
Seed-OSS-36B-Instruct
vs. Step 3.5 Flash
Comparing 2 AI models · 0 benchmarks · ByteDance Seed, StepFun
Recommended Pick
StStep 3.5 Flash9 metric winsStrongest on: Value, Input price, Output price
Best Value
Step 3.5 Flash
100.0 value score
19.1 reasoning / $0.15/1M
Lowest Price
Step 3.5 Flash
$0.10/1M input price
Best Reasoning
Step 3.5 Flash
19.1 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Step 3.5 Flash has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Step 3.5 Flash is 2.1x cheaper on input tokens than Seed-OSS-36B-Instruct.
Speed gap
Step 3.5 Flash generates about 6.6x as many tokens per second as Seed-OSS-36B-Instruct.
Reasoning gap
Step 3.5 Flash leads Seed-OSS-36B-Instruct by 6.9 points on reasoning.
Top-pick rationale
Step 3.5 Flash wins 9 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.
Seed-OSS-36B-Instruct
ByteDance Seed
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?
Secure AI Chat made in Europe
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OpenAI-compatible inference
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Full Comparison
| Metric | By Seed-OSS-36B-Instruct | Top Pick St Step 3.5 Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.21/1M | $0.10/1M |
| Output Cost | $0.57/1M | $0.30/1M |
| Blended (3:1) | $0.30/1M | $0.15/1M |
| Specifications | ||
| Organization | ByteDance Seed | StepFun |
| Release Date | Aug 20, 2025 | Feb 2, 2026 |
| Performance & Speed | ||
| Throughput | 34.1 tok/s | 223.7 tok/s |
| TTFT | 2660ms | 1170ms |
| Latency | 61330ms | 10110ms |
| Composite Indices | ||
| Value Score | 31.9 | 100.0 |
| Reasoning Score | 12.2 | 19.1 |
| Intelligence | 12.2 | 19.1 |
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.
Step 3.5 Flash has the strongest reasoning profile with a 19.1 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
Seed-OSS-36B-Instruct
- General-purpose AI
- Versatile applications
Step 3.5 Flash
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
