Model Comparison
Qwen3.5 Omni Plus
vs. Sonar Reasoning Pro
Comparing 2 AI models · 9 benchmarks · Alibaba, 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 Qwen3.5 Omni Plus.
Reasoning gap
Sonar Reasoning Pro leads Qwen3.5 Omni Plus by 21.8 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.
Qwen3.5 Omni Plus
Alibaba
TTFT
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Time
—
tok/s
—
Tokens
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Cost
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Sonar Reasoning Pro
Perplexity
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Al Qwen3.5 Omni Plus | Top Pick Pe Sonar Reasoning Pro |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.40/1M | $0.00/1M |
| Output Cost | $4.80/1M | $0.00/1M |
| Blended (3:1) | $1.50/1M | — |
| Specifications | ||
| Organization | Alibaba | Perplexity |
| Release Date | Mar 30, 2026 | Jan 28, 2025 |
| Performance & Speed | ||
| Throughput | 56.8 tok/s | — |
| TTFT | 1261ms | — |
| Latency | 1261ms | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 42.4 | 64.2 |
| Intelligence | 30.6 | 17.8 |
| Standard Benchmarks | ||
| GPQA | 82.6% | — |
| HLE | 13.9% | — |
| MATH 500 | — | 95.7% |
| AIME (Original) | — | 79.0% |
| SciCode | 40.5% | — |
| LCR | 52.7% | — |
| IFBench | 51.2% | — |
| TAU-bench v2 | 88.3% | — |
| TerminalBench Hard | 21.2% | — |
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
Qwen3.5 Omni Plus
- General-purpose AI
- Versatile applications
Sonar Reasoning Pro
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
