Claude Fable 5.1 vs Deepseek v4 Pro
Claude Fable 5.1 
Deepseek v4 Pro Verdict
- Claude Fable 5.1 (max) leads on quality: 70.3 vs 60.4.
- Claude Fable 5.1 (max) is stronger in agents & tools, coding, composite, human preference, knowledge, maths, reasoning.
| Metric | Claude Fable 5.1 (max) | Deepseek v4 Pro (high) |
|---|---|---|
| BenchLeader Index | 70.3 | 60.4 |
| Agents & tools score | 67.4 | – |
| Coding score | 78.4 | 59.4 |
| Composite score | 76.6 | – |
| Human preference score | 71.3 | 65.8 |
| Knowledge score | 75.9 | – |
| Maths score | 77.0 | 66.2 |
| Reasoning score | 71.9 | 66.0 |
| Blended price $/M | $20.00 | – |
| Output speed | 40 tok/s | – |
| Time to first answer | 299.8 s | – |
| Context window | 1M | – |
| GPQA Diamond | – | 90.9% |
| FrontierMath Tiers 1–3 | 90.2% | – |
| FrontierMath Tier 4 | 87.8% | – |
| OTIS Mock AIME | 100.0% | 95.6% |
| SimpleQA Verified | 70.8% | – |
| Terminal-Bench | 57.9% | – |
| SciCode | 62.0% | 46.4% |
| WeirdML | 92.9% | 46.5% |
| ProofBench | 100.0% | – |
| LMArena Text | 1504 | 1460 |
| LMArena Hard Prompts | 1522 | 1482 |
| LMArena Coding | 1517 | 1505 |
| LMArena WebDev | 1764 | 1580 |
| LMArena Agent | 14.5 | – |
| LiveBench | 83.4% | – |
| LiveBench Reasoning | 91.7% | – |
| LiveBench Coding | 86.4% | – |
| LiveBench Agentic Coding | 66.1% | – |
| LiveBench Mathematics | 97.0% | – |
| LiveBench Data Analysis | 80.3% | – |
| LiveBench Language | 89.5% | – |
| ARC-AGI-1 | 97.5% | – |
| ARC-AGI-2 | 90.0% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5.1 vs Deepseek v4 Pro: questions
- Is Claude Fable 5.1 better than Deepseek v4 Pro?
- Claude Fable 5.1 (max) leads on quality: 70.3 vs 60.4. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5.1 (max) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Claude Fable 5.1 better than Deepseek v4 Pro for coding?
- Claude Fable 5.1 scores higher in coding (78 vs 59 on the category index, where 50 is average).