Leaderboard / best model for hard reasoning / analysis
Best model for hard reasoning / analysis
For hard reasoning / analysis, the best value is DeepSeek V4 Pro — 95% cheaper than Claude Fable 5 at near-equal quality.
Best value
DeepSeek V4 Pro
Highest quality
Claude Fable 5
Cheapest
Grok 4.1 Fast
All models for hard reasoning / analysis, ranked by quality-per-dollar
| Model | Provider | Capability | Cost / call |
|---|---|---|---|
| Grok 4.1 Fast | xAI | 83 | $0.0006 |
| DeepSeek V4 Flash | DeepSeek | 87 | $0.0007 |
| Llama 4 Maverick | Meta | 79 | $0.0006 |
| GPT-5.6 Luna | OpenAI | 85 | $0.0009 |
| GPT-5 mini | OpenAI | 82 | $0.0014 |
| Mistral Large 3 | Mistral | 84 | $0.0015 |
| DeepSeek V4 ProBEST VALUE | DeepSeek | 94 | $0.0020 |
| Gemini 2.5 Flash | 80 | $0.0017 | |
| Gemini 3.7 Flash | 86 | $0.0030 | |
| Gemini 3.6 Flash | 85 | $0.0030 | |
| Qwen 3 Max | Alibaba | 84 | $0.0031 |
| GLM 5.3 | Z.ai | 90 | $0.0043 |
| Claude Haiku 4.5 | Anthropic | 78 | $0.0040 |
| Grok 4.6 | xAI | 95 | $0.0060 |
| GPT-5 | OpenAI | 96 | $0.0069 |
| Gemini 2.5 Pro | 90 | $0.0069 | |
| GPT-5.6 Sol | OpenAI | 98 | $0.0080 |
| Claude Sonnet 5 | Anthropic | 93 | $0.0080 |
| GPT-5.6 Terra | OpenAI | 96 | $0.0090 |
| Gemini 3.1 Pro | 94 | $0.0090 | |
| GPT-5.2 | OpenAI | 96 | $0.0096 |
| Kimi K3 | Moonshot | 96 | $0.0120 |
| Claude Sonnet 4.6 | Anthropic | 91 | $0.0120 |
| Claude Opus 4.8 | Anthropic | 97 | $0.0200 |
| Claude Opus 5 | Anthropic | 96 | $0.0200 |
| GPT-5.5 | OpenAI | 97 | $0.0225 |
| Claude Fable 5 | Anthropic | 99 | $0.0400 |
What is the best model for hard reasoning / analysis in 2026?
For hard reasoning / analysis, DeepSeek V4 Pro offers the best quality-per-dollar — 95% cheaper than the premium default (Claude Fable 5) at near-equal capability. If cost is the only concern, Grok 4.1 Fast is the absolute floor.
How much can I save on hard reasoning / analysis?
At 10,000 calls/month, switching from Claude Fable 5 to DeepSeek V4 Pro takes the cost from $400.00 to $19.80 — about $380.20/month saved.
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