Model Comparison
Solar Open2 250B
vs. Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Upstage, Anthropic
Recommended Pick
AnClaude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)2 metric winsStrongest on: Reasoning, Intelligence
Lowest Price
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
$4.00/1M input price
Best Reasoning
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
56.0 reasoning score
Blends available reasoning benchmarks
Best for Coding
Solar Open2 250B
45.0 coding index
Differences That Matter
Reasoning gap
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) leads Solar Open2 250B by 31.3 points on reasoning.
Top-pick rationale
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) wins 2 measurable categories, including Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Open2 250B
Upstage
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 Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Anthropic
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
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 | Up Solar Open2 250B | Top Pick An Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | — | $4.00/1M |
| Output Cost | — | $20.00/1M |
| Blended (3:1) | — | $8.00/1M |
| Specifications | ||
| Organization | Upstage | Anthropic |
| Release Date | Aug 12, 2026 | Sep 17, 2026 |
| Performance & Speed | ||
| Throughput | — | 76.2 tok/s |
| TTFT | — | 165200ms |
| Latency | — | 165200ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | 24.7 | 56.0 |
| Intelligence | 24.7 | 56.0 |
| Coding | 45.0 | — |
Key Takeaways
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) offers the best value at $4.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has the strongest reasoning profile with a 56.0 reasoning score,combining the available reasoning-heavy benchmarks.
Solar Open2 250B reaches a 45.0 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
Solar Open2 250B
- Code generation
- Software development
Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
