Model Comparison
Solar Pro 2 (Reasoning)
vs. Sonar
Comparing 2 AI models · 12 benchmarks · Upstage, Perplexity
Recommended Pick
UpSolar Pro 2 (Reasoning)7 metric winsStrongest on: Reasoning, GPQA, MMLU Pro
Lowest Price
Solar Pro 2 (Reasoning)
$0.00/1M input price
Best Reasoning
Solar Pro 2 (Reasoning)
53.3 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
Solar Pro 2 (Reasoning) leads Sonar by 14.4 points on reasoning.
Top-pick rationale
Solar Pro 2 (Reasoning) wins 7 measurable categories, including Reasoning, GPQA, MMLU Pro, LiveCodeBench.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Pro 2 (Reasoning)
Upstage
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Sonar
Perplexity
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Top Pick Up Solar Pro 2 (Reasoning) | Pe Sonar |
|---|---|---|
| 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 | Jul 9, 2025 | Jan 21, 2025 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Reasoning Score | 53.3 | 38.8 |
| Intelligence | 9.0 | 9.5 |
| Math | 61.3 | — |
| Standard Benchmarks | ||
| GPQA | 68.7% | 47.1% |
| MMLU Pro | 80.5% | 68.9% |
| HLE | 7.0% | 7.3% |
| LiveCodeBench | 61.6% | 29.5% |
| MATH 500 | 96.7% | 81.7% |
| AIME 2025 | 61.3% | — |
| AIME (Original) | 69.0% | 48.7% |
| SciCode | 30.2% | 22.9% |
| LCR | 0.0% | — |
| IFBench | 37.1% | — |
| TAU-bench v2 | 28.1% | — |
| TerminalBench Hard | 3.0% | — |
Key Takeaways
Solar Pro 2 (Reasoning) offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Solar Pro 2 (Reasoning) has the strongest reasoning profile with a 53.3 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 (Reasoning)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
Sonar
- General-purpose AI
- Versatile applications
