Reasoning Models
Best LLMs for Reasoning and Deep Thinking in 2026
Compare LLMs with advanced reasoning capabilities. These models use chain-of-thought and extended thinking to solve complex problems in math, science, logic, and analysis. Ranked by LiveBench reasoning scores alongside API pricing.
Top Picks
Most Capable
Sonar Deep Research
Perplexity
$2.00/1M input
Largest Context
Deepseek V3.2
DeepSeek
163.8Kcontext
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Cost per 1M Tokens / Flagship Models
All Reasoning Models
| Provider | Model | Input $/1M | Output $/1M | Context | Quality |
|---|---|---|---|---|---|
| DeepSeek | Deepseek V3.2 | $0.2600 | $0.3800 | 163.8K | 84.8Frontier |
| DeepSeek | Deepseek R1 | $0.7000 | $2.50 | 64K | 64.6Strong |
| Perplexity | Sonar Reasoning Pro | $2.00 | $8.00 | 128K | N/A |
| Perplexity | Sonar Deep Research | $2.00 | $8.00 | 128K | N/A |
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