Model Comparison
Solar Pro 2 (Preview) (Reasoning)
vs. Sonar Reasoning
Comparing 2 AI models · 7 benchmarks · Upstage, Perplexity
Recommended Pick
PeSonar Reasoning4 metric winsStrongest on: Reasoning, GPQA, MATH 500
Lowest Price
Solar Pro 2 (Preview) (Reasoning)
$0.00/1M input price
Best Reasoning
Sonar Reasoning
60.8 reasoning score
Blends available reasoning benchmarks
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Reasoning gap
Sonar Reasoning leads Solar Pro 2 (Preview) (Reasoning) by 14.3 points on reasoning.
Top-pick rationale
Sonar Reasoning wins 4 measurable categories, including Reasoning, GPQA, MATH 500, AIME (Original).
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Pro 2 (Preview) (Reasoning)
Upstage
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Sonar Reasoning
Perplexity
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Chat with leading AI models
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 Pro 2 (Preview) (Reasoning) | Top Pick Pe Sonar Reasoning |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $0.00/1M |
| Output Cost | $0.00/1M | $0.00/1M |
| Specifications | ||
| Organization | Upstage | Perplexity |
| Release Date | May 20, 2025 | Jan 28, 2025 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Reasoning Score | 46.5 | 60.8 |
| Intelligence | 12.5 | 11.7 |
| Standard Benchmarks | ||
| GPQA | 57.8% | 62.3% |
| MMLU Pro | 76.8% | — |
| HLE | 5.7% | — |
| LiveCodeBench | 46.2% | — |
| MATH 500 | 90.0% | 92.1% |
| AIME (Original) | 66.3% | 77.0% |
| SciCode | 16.4% | — |
Key Takeaways
Solar Pro 2 (Preview) (Reasoning) offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Sonar Reasoning has the strongest reasoning profile with a 60.8 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
Solar Pro 2 (Preview) (Reasoning)
- Cost-sensitive applications
- High-volume processing
Sonar Reasoning
- Complex reasoning tasks
- Research & analysis
