Comparing 2 models
Claude Fable 5.1 vs GPT-6.1 Sol
Benchmarks through
Verdict
Claude Fable 5.1 places higher on 18 of the 28 tasks where both are ranked. GPT-6.1 Sol costs 5.0x less per input token. GPT-6.1 Sol accepts 1.1x more context.
- Choose Claude Fable 5.1 for Competition Math (#1), Tool & Function Calling (#1), Math & Reasoning (#1).
- Choose GPT-6.1 Sol for Image Understanding (#1), OpenClaw (#2), Translation (#2).
Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.
Measured head to head
Benchmarks both models were run on
| Evaluation | Claude Fable 5.1 | GPT-6.1 Sol | Source |
|---|---|---|---|
| Design Arena Coding | 1338 Elo | 1346 Elo | source · 2026-10-16 |
| Design Arena UI | 1338 Elo | 1331 Elo | source · 2026-10-16 |
| Design Arena Website | 1314 Elo | 1323 Elo | source · 2026-10-16 |
| FrontierMath Tiers 1-3 (Epoch AI) | 90.2% ± 1.8 | 93.7% ± 1.4 | source · 2026-09-01 |
| LiveBench Agentic Coding | 66.1% | 54.5% | source · 2026-10-16 |
| LiveBench Coding | 86.4% | 80.4% | source · 2026-10-16 |
| LiveBench Data Analysis | 80.3% | 82.7% | source · 2026-10-16 |
| LiveBench Instruction Following | 73.0% | 74.2% | source · 2026-10-16 |
| LiveBench Language | 89.5% | 90.1% | source · 2026-10-16 |
| LiveBench Math | 97.0% | 96.8% | source · 2026-10-16 |
| LiveBench Reasoning | 91.7% | 92.6% | source · 2026-10-16 |
| LMArena Agent | 14.1 | 14.8 | source · 2026-10-14 |
| LMArena Agent Bash Recovery | 11.6 | 4.5 | source · 2026-10-08 |
| LMArena Agent Steerability | 14.7 | 14.7 | source · 2026-10-14 |
| LMArena Agent Task Outcome | 15.7 | 15.7 | source · 2026-10-14 |
| LMArena Agent Tool Hallucination | 0.6 | 0.6 | source · 2026-10-14 |
| LMArena Creative Writing | 1508 Elo | 1430 Elo | source · 2026-10-15 |
| LMArena Instruction Following | 1517 Elo | 1469 Elo | source · 2026-10-15 |
| LMArena Long Query | 1523 Elo | 1464 Elo | source · 2026-10-15 |
| LMArena Math | 1528 Elo | 1470 Elo | source · 2026-10-15 |
| LMArena Search Factuality | 1222 Elo | 1236 Elo | source · 2026-10-13 |
| LMArena Text | 1502 Elo | 1484 Elo | source · 2026-10-15 |
| LMArena Text Factuality | 1498 Elo | 1465 Elo | source · 2026-10-15 |
| LMArena Vision | 1286 Elo | 1294 Elo | source · 2026-10-09 |
| LMArena Vision Diagrams | 1326 Elo | 1311 Elo | source · 2026-10-09 |
| LMArena Vision OCR | 1302 Elo | 1295 Elo | source · 2026-10-09 |
| LMArena WebDev | 1743 Elo | 1760 Elo | source · 2026-10-13 |
| LMArena WebDev Image-to-Web | 1720 Elo | 1703 Elo | source · 2026-10-09 |
| OTIS Mock AIME (Epoch AI) | 100% ± 0 | 100% ± 0 | source · 2026-09-01 |
| SimpleQA Verified (Epoch AI) | 70.8% ± 1.4 | 73.9% ± 1.4 | source · 2026-09-01 |
| Terminal-Bench (4.0) | 57.9% | 58.2% | source · 2026-10-16 |
Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.
task evidence
How they place when the question changes
Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.