Model Comparison
K3.1 Pro
vs. Claude Sonnet 5.5 (Max, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Kimi, Anthropic
Recommended Pick
AnClaude Sonnet 5.5 (Max, Default Fallback)4 metric winsStrongest on: Value, Throughput, Reasoning
Best Value
Claude Sonnet 5.5 (Max, Default Fallback)
100.0 value score
56.0 reasoning / $4.00/1M
Lowest Price
K3.1 Pro
$2.00/1M input price
Best Reasoning
Claude Sonnet 5.5 (Max, Default Fallback)
56.0 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Claude Sonnet 5.5 (Max, Default Fallback) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Speed gap
Claude Sonnet 5.5 (Max, Default Fallback) generates about 3.4x as many tokens per second as K3.1 Pro.
Reasoning gap
Claude Sonnet 5.5 (Max, Default Fallback) leads K3.1 Pro by 0.9 points on reasoning.
Top-pick rationale
Claude Sonnet 5.5 (Max, Default Fallback) wins 4 measurable categories, including Value, Throughput, Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
K3.1 Pro
Kimi
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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Claude Sonnet 5.5 (Max, Default Fallback)
Anthropic
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Secure AI Chat made in Europe
Use open-weight models like DeepSeek, Qwen and Kimi in one app.
EU-hosted open models, one API
Servers in Germany & Finland. Operated by a German company under the GDPR, DPA available, ISO 27001-certified data centres.
Full Comparison
| Metric | Ki K3.1 Pro | Top Pick An Claude Sonnet 5.5 (Max, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $2.00/1M | $2.00/1M |
| Output Cost | $10.00/1M | $10.00/1M |
| Blended (3:1) | $4.00/1M | $4.00/1M |
| Specifications | ||
| Organization | Kimi | Anthropic |
| Release Date | Oct 23, 2026 | Sep 28, 2026 |
| Performance & Speed | ||
| Throughput | 41.4 tok/s | 140.1 tok/s |
| TTFT | 2890ms | 466370ms |
| Latency | 51160ms | 466370ms |
| Composite Indices | ||
| Value Score | 98.4 | 100.0 |
| Reasoning Score | 55.1 | 56.0 |
| Intelligence | 55.1 | 56.0 |
Key Takeaways
K3.1 Pro offers the best value at $2.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Sonnet 5.5 (Max, Default Fallback) has the strongest reasoning profile with a 56.0 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
K3.1 Pro
- Cost-sensitive applications
- High-volume processing
Claude Sonnet 5.5 (Max, Default Fallback)
- Complex reasoning tasks
- Research & analysis
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