Comparing 2 models
Claude Fable 5.1 vs Qwen3.8 27B
Benchmarks through
Verdict
Claude Fable 5.1 and Qwen3.8 27B are not yet ranked on the same task, so compare the specifications below. Qwen3.8 27B costs 250.0x less per input token. Only Qwen3.8 27B has open weights for self-hosting.
- Choose Qwen3.8 27B for you need to self-host.
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 | Qwen3.8 27B | Source |
|---|---|---|---|
| LiveBench Agentic Coding | 66.1% | 61.4% | source · 2026-10-18 |
| LiveBench Coding | 86.4% | 75.7% | source · 2026-10-18 |
| LiveBench Data Analysis | 80.3% | 76.6% | source · 2026-10-18 |
| LiveBench Instruction Following | 73.0% | 72.7% | source · 2026-10-18 |
| LiveBench Language | 89.5% | 74.3% | source · 2026-10-18 |
| LiveBench Math | 97.0% | 86.2% | source · 2026-10-18 |
| LiveBench Reasoning | 91.7% | 80.0% | source · 2026-10-18 |
| LMArena Agent | 14.2 | -3.8 | source · 2026-10-20 |
| LMArena Agent Steerability | 14.8 | -3.9 | source · 2026-10-20 |
| LMArena Agent Task Outcome | 14.9 | -1.5 | source · 2026-10-20 |
| LMArena Agent Tool Hallucination | 0.6 | -0.1 | source · 2026-10-20 |
| LMArena Creative Writing | 1509 Elo | 1383 Elo | source · 2026-10-20 |
| LMArena Instruction Following | 1518 Elo | 1436 Elo | source · 2026-10-20 |
| LMArena Long Query | 1524 Elo | 1448 Elo | source · 2026-10-20 |
| LMArena Math | 1531 Elo | 1455 Elo | source · 2026-10-20 |
| LMArena Text | 1503 Elo | 1437 Elo | source · 2026-10-20 |
| LMArena Text Factuality | 1498 Elo | 1437 Elo | source · 2026-10-20 |
| LMArena Vision | 1288 Elo | 1242 Elo | source · 2026-10-19 |
| LMArena Vision Diagrams | 1323 Elo | 1270 Elo | source · 2026-10-19 |
| LMArena Vision OCR | 1303 Elo | 1262 Elo | source · 2026-10-19 |
| LMArena WebDev | 1743 Elo | 1593 Elo | source · 2026-10-19 |
| LMArena WebDev Image-to-Web | 1722 Elo | 1577 Elo | source · 2026-10-19 |
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.