Model Comparison
K3 (max)
vs. Step 5 Preview
Comparing 2 AI models · 0 benchmarks · Kimi, StepFun
Recommended Pick
StStep 5 Preview7 metric winsStrongest on: Value, Input price, Output price
Best Value
Step 5 Preview
100.0 value score
43.6 reasoning / $1.43/1M
Lowest Price
Step 5 Preview
$1.00/1M input price
Best Reasoning
K3 (max)
43.8 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 2.6x as many tokens per second as K3 (max).
Reasoning gap
K3 (max) leads Step 5 Preview by 0.2 points on reasoning.
Top-pick rationale
Step 5 Preview wins 7 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.
K3 (max)
Kimi
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Step 5 Preview
StepFun
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
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 | Ki K3 (max) | Top Pick St Step 5 Preview |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $3.00/1M | $1.00/1M |
| Output Cost | $15.00/1M | $2.70/1M |
| Blended (3:1) | $6.00/1M | $1.43/1M |
| Specifications | ||
| Organization | Kimi | StepFun |
| Release Date | Jul 16, 2026 | Sep 18, 2026 |
| Performance & Speed | ||
| Throughput | 38.9 tok/s | 99.8 tok/s |
| TTFT | 3960ms | 2960ms |
| Latency | 55380ms | 23010ms |
| Composite Indices | ||
| Value Score | 23.9 | 100.0 |
| Reasoning Score | 43.8 | 43.6 |
| Intelligence | 43.8 | 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.
K3 (max) has the strongest reasoning profile with a 43.8 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
K3 (max)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Step 5 Preview
- Cost-sensitive applications
- High-volume processing
