Model Comparison
Sonar Reasoning Pro
vs. Tri-21B-Think
Comparing 2 AI models · 0 benchmarks · Perplexity, Trillion Labs
Recommended Pick
PeSonar Reasoning Pro2 metric winsStrongest on: Reasoning, Intelligence
Best Reasoning
Sonar Reasoning Pro
18.0 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Reasoning gap
Sonar Reasoning Pro leads Tri-21B-Think by 5.7 points on reasoning.
Top-pick rationale
Sonar Reasoning Pro 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.
Sonar Reasoning Pro
Perplexity
TTFT
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Cost
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Tri-21B-Think
Trillion Labs
TTFT
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tok/s
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Tokens
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Which answer was more useful?
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OpenAI-compatible inference
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Full Comparison
| Metric | Top Pick Pe Sonar Reasoning Pro | Tr Tri-21B-Think |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | — | — |
| Output Cost | — | — |
| Specifications | ||
| Organization | Perplexity | Trillion Labs |
| Release Date | Jan 28, 2025 | Feb 10, 2026 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Reasoning Score | 18.0 | 12.3 |
| Intelligence | 18.0 | 12.3 |
Key Takeaways
Sonar Reasoning Pro has the strongest reasoning profile with a 18.0 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
Sonar Reasoning Pro
- Complex reasoning tasks
- Research & analysis
Tri-21B-Think
- General-purpose AI
- Versatile applications
