Model Comparison
Step 5 Preview
vs. K3 (max)
Comparing 2 AI models · 0 benchmarks · StepFun, Kimi
Recommended Pick
StStep 5 Preview9 metric winsStrongest on: Value, Input price, Output price
Best Value
Step 5 Preview
100.0 value score
43.7 reasoning / $1.43/1M
Lowest Price
Step 5 Preview
$1.00/1M input price
Best Reasoning
Step 5 Preview
43.7 reasoning score
Blends available reasoning benchmarks
Best for Coding
K3 (max)
76.2 coding index
Differences That Matter
Best value
Step 5 Preview has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Step 5 Preview is 3.0x cheaper on input tokens than K3 (max).
Speed gap
Step 5 Preview generates about 2.3x as many tokens per second as K3 (max).
Reasoning gap
Step 5 Preview leads K3 (max) by 0.1 points on reasoning.
Top-pick rationale
Step 5 Preview 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.
Step 5 Preview
StepFun
TTFT
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Time
—
tok/s
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Tokens
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Cost
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K3 (max)
Kimi
TTFT
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Time
—
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
Use Claude, ChatGPT, Gemini alongside with EU-Hosted Models like Deepseek, Qwen & Kimi.
EU-hosted inference
Servers in Germany & Finland. Designed to meet strict GDPR and ISO 27001 compliance requirements.
Full Comparison
| Metric | Top Pick St Step 5 Preview | Ki K3 (max) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.00/1M | $3.00/1M |
| Output Cost | $2.70/1M | $15.00/1M |
| Blended (3:1) | $1.43/1M | $6.00/1M |
| Specifications | ||
| Organization | StepFun | Kimi |
| Release Date | Sep 18, 2026 | Jul 16, 2026 |
| Performance & Speed | ||
| Throughput | 83.6 tok/s | 37.0 tok/s |
| TTFT | 4120ms | 4150ms |
| Latency | 28040ms | 58210ms |
| Composite Indices | ||
| Value Score | 100.0 | 23.7 |
| Reasoning Score | 43.7 | 43.6 |
| Intelligence | 43.7 | 43.6 |
| Coding | — | 76.2 |
Key Takeaways
Step 5 Preview offers the best value at $1.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Step 5 Preview has the strongest reasoning profile with a 43.7 reasoning score,combining the available reasoning-heavy benchmarks.
K3 (max) reaches a 76.2 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
Step 5 Preview
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
K3 (max)
- Code generation
- Software development
