Model Comparison
Step 3.5 Flash 2603
vs. Tri-21B-Think
Comparing 2 AI models · 0 benchmarks · StepFun, Trillion Labs
Lowest Price
Step 3.5 Flash 2603
$0.10/1M input price
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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Tri-21B-Think
Trillion Labs
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 | St Step 3.5 Flash 2603 | Tr Tri-21B-Think |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.10/1M | — |
| Output Cost | $0.30/1M | — |
| Blended (3:1) | $0.15/1M | — |
| Specifications | ||
| Organization | StepFun | Trillion Labs |
| Release Date | Apr 2, 2026 | Feb 10, 2026 |
| Performance & Speed | ||
| Throughput | 150.7 tok/s | — |
| TTFT | 3270ms | — |
| Latency | 16540ms | — |
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.
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
Tri-21B-Think
- General-purpose AI
- Versatile applications
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