Best Reasoning LLMs (2026)
Top AI models for complex reasoning, math, and step-by-step problem solving. Compare o3, DeepSeek-R1, Gemini Thinking, and other reasoning-focused models.
| # | Model | Input $/1M | Output $/1M | |
|---|---|---|---|---|
| 1 | Grok 4 Reasoning | $3 | $15 | |
| 2 | Grok 4 Fast Reasoning Reasoning | — | — | |
| 3 | Grok 4 Fast Non-Reasoning Reasoning | — | — | |
| 4 | Claude Sonnet 4.6 ReasoningVisionTools | $3 | $15 | |
| 5 | Claude Sonnet 4.6 Batch ReasoningVisionTools | $1.5 | $7.5 | |
| 6 | Claude Opus 4.6 ReasoningVisionTools | $5 | $25 | |
| 7 | Claude Opus 4.6 Batch ReasoningVisionTools | $2.5 | $12.5 | |
| 8 | Grok-3 ReasoningVisionTools | $3 | $15 | |
| 9 | Magistral Small 2506 Reasoning | — | — | |
| 10 | Phi-4 Mini Flash Reasoning Reasoning | — | — | |
| 11 | Claude Opus 4.5 ReasoningVisionTools | $5 | $25 | |
| 12 | Claude Sonnet 4.5 ReasoningVisionTools | $3 | $15 | |
| 13 | o3-pro ReasoningVisionTools | $20 | $80 | |
| 14 | o3 Reasoning | $1 | $4 | |
| 15 | o3 Mini ReasoningTools | $1.1 | $4.4 | |
| 16 | DeepSeek R1 Reasoning | $0.1 | $0.3 | |
| 17 | DeepSeek R1 Zero Reasoning | — | — | |
| 18 | DeepSeek R1 Distill Qwen 1.5B Reasoning | $0.1 | $0.1 | |
| 19 | DeepSeek R1 Distill Qwen 7B Reasoning | $0.2 | $0.2 | |
| 20 | DeepSeek R1 Distill Llama 8B Reasoning | $0.2 | $0.2 |