Model Comparison
o3-pro
vs. Sonar Reasoning Pro
Comparing 2 AI models · 3 benchmarks · OpenAI, Perplexity
Recommended Pick
PeSonar Reasoning Pro5 metric winsStrongest on: Input price, Output price, TTFT
Lowest Price
Sonar Reasoning Pro
$0.00/1M input price
Best Reasoning
Sonar Reasoning Pro
64.2 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
Price gap
Sonar Reasoning Pro is ∞x cheaper on input tokens than o3-pro.
Reasoning gap
Sonar Reasoning Pro leads o3-pro by 5.7 points on reasoning.
Top-pick rationale
Sonar Reasoning Pro wins 5 measurable categories, including Input price, Output price, TTFT, Latency.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
o3-pro
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Sonar Reasoning Pro
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 | Op o3-pro | Top Pick Pe Sonar Reasoning Pro |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $20.00/1M | $0.00/1M |
| Output Cost | $80.00/1M | $0.00/1M |
| Blended (3:1) | $35.00/1M | — |
| Specifications | ||
| Organization | OpenAI | Perplexity |
| Release Date | Jun 10, 2025 | Jan 28, 2025 |
| Performance & Speed | ||
| Throughput | 32.7 tok/s | — |
| TTFT | 58345ms | — |
| Latency | 58345ms | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 58.5 | 64.2 |
| Intelligence | 32.5 | 17.8 |
| Standard Benchmarks | ||
| GPQA | 84.5% | — |
| MATH 500 | — | 95.7% |
| AIME (Original) | — | 79.0% |
Key Takeaways
Sonar Reasoning Pro offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Sonar Reasoning Pro has the strongest reasoning profile with a 64.2 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
o3-pro
- General-purpose AI
- Versatile applications
Sonar Reasoning Pro
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
