# Claude Fable 5.1 vs Qwen3.6-27B

> Side-by-side benchmark comparison for Claude Fable 5.1 and Qwen3.6-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-1-vs-qwen3-6-27b
- Last updated: October 17, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Claude Fable 5.1 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Claude Fable 5.1 has the higher overall point estimate 83.18 to 48.59. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 80.9 for Claude Fable 5.1 and 29 for Qwen3.6-27B.
- The biggest single benchmark swing is FrontierMath v2 (Tiers 1-3) in Mathematics, with scores of 90.175% and 35.088%.
- Qwen3.6-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Fable 5.1 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Fable 5.1 | Qwen3.6-27B |
|----------|----------|----------|
| Creator | Anthropic | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 83.18 | 48.59 |
| Benchmarks Covered | 33 | 40 |
| Pricing (input/output) | $10.00 / $50.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Claude Fable 5.1
- Claude Fable 5.1 public-lane score: 80.9 (Supported · #2/128)
- Qwen3.6-27B public-lane score: 29 (Supported · #95/128)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 55.80% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 52.6% | Coming soon | Coming soon |
| OSWorld 2.0 | 41.7% | Coming soon | Coming soon |
| AutomationBench | 31.4% | Coming soon | Coming soon |
| Toolathlon-Verified | 77.8% | Coming soon | Coming soon |
| Toolathlon Verified Pass@3 | 81.5% | Coming soon | Coming soon |
| Toolathlon Verified Pass³ | 73.1% | Coming soon | Coming soon |
| Toolathlon Verified avg. turns | 23.7 turns | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 85.0% | Coming soon | Coming soon |
| ApprenticeBench | 72% | Coming soon | Coming soon |
| CWE-bench v1 | 58.0% | Coming soon | Coming soon |
| MazeBench | 10% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 59.3% | Coming soon |
| Claw-Eval | Coming soon | 72.4% | Coming soon |
| QwenClawBench | Coming soon | 53.4% | Coming soon |
| QwenWebBench | Coming soon | 1487 | Coming soon |
| AndroidWorld | Coming soon | 70.3% | Coming soon |
| Gert Labs | Coming soon | 54.84% | Coming soon |

### Coding

- Winner: Claude Fable 5.1
- Claude Fable 5.1 public-lane score: 76.8 (Supported · #3/150)
- Qwen3.6-27B public-lane score: 34.7 (Supported · #78/150)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| Bug Hunt Bench | 43.0 fixes | Coming soon | Coming soon |
| SWE-bench Pro | 81.2% | 53.5% | Claude Fable 5.1 |
| SWE Multilingual | 89.1% | 71.3% | Claude Fable 5.1 |
| SWE Multimodal | 54.7% | Coming soon | Coming soon |
| DeepSWE | 67.4% | Coming soon | Coming soon |
| FrontierSWE v2 | 56.3% | Coming soon | Coming soon |
| ProgramBench | 87.6% | Coming soon | Coming soon |
| CursorBench 3.2 | 73.4% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 90.5% | Coming soon | Coming soon |
| CursorBench 4.0 | 51.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 40.2% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.2% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 59.3% | Coming soon |
| LiveCodeBench v6 | Coming soon | 83.9% | Coming soon |
| NL2Repo | Coming soon | 36.2% | Coming soon |
| SWE-bench (Vals) | Coming soon | 70.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 85.2 (#4/28)
- Qwen3.6-27B public-lane score: 79 (Unranked · 2 rankable rows)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 97.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 90% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 65.0% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Qwen3.6-27B public-lane score: 67.3 (#38/54)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | Coming soon | 82.9% | Coming soon |
| MMMU-Pro | Coming soon | 75.8% | Coming soon |
| RealWorldQA | Coming soon | 84.1% | Coming soon |
| DynaMath | Coming soon | 85.6% | Coming soon |
| MStar | Coming soon | 81.4% | Coming soon |
| SimpleVQA | Coming soon | 56.1% | Coming soon |
| CharXiv | Coming soon | 78.4% | Coming soon |
| CC-OCR | Coming soon | 81.2% | Coming soon |
| CountBench | Coming soon | 97.8% | Coming soon |
| RefCOCO (avg) | Coming soon | 92.5% | Coming soon |
| ERQA | Coming soon | 62.5% | Coming soon |
| Video-MME (with subtitle) | Coming soon | 87.7% | Coming soon |
| VideoMMMU | Coming soon | 84.4% | Coming soon |
| MLVU (M-Avg) | Coming soon | 86.6% | Coming soon |
| V* | Coming soon | 94.7% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Fable 5.1 public-lane score: 86.9 (Supported · #2/184)
- Qwen3.6-27B public-lane score: 46.8 (Estimated · #90/184)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| HLE | 65% | 24% | Claude Fable 5.1 |
| HLE w/o tools | 60.9% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 93.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 92.4% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 86.2% | Coming soon |
| MMLU-Redux | Coming soon | 93.5% | Coming soon |
| SuperGPQA | Coming soon | 66% | Coming soon |
| C-Eval | Coming soon | 91.4% | Coming soon |
| GPQA | Coming soon | 87.8% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Qwen3.6-27B public-lane score: 82.4 (#55/148)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 1.0% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 96.8 (Unranked · 2 rankable rows)
- Qwen3.6-27B public-lane score: 65.9 (#8/12)

| Benchmark | Claude Fable 5.1 | Qwen3.6-27B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 90.175% | 35.088% | Claude Fable 5.1 |
| FrontierMath v2 (Tier 4) | 87.805% | Coming soon | Coming soon |
| HMMT Feb 2025 | Coming soon | 93.8% | Coming soon |
| HMMT Nov 2025 | Coming soon | 90.7% | Coming soon |
| HMMT Feb 2026 | Coming soon | 84.3% | Coming soon |
| MMAnswerBench | Coming soon | 80.8% | Coming soon |
| AIME26 | Coming soon | 94.1% | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.1 or Qwen3.6-27B?

Claude Fable 5.1 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Fable 5.1 and Qwen3.6-27B?

The widest category gap is in agentic, where the averages are 80.9 for Claude Fable 5.1 and 29 for Qwen3.6-27B.

### How many benchmarks does Claude Fable 5.1 cover on BenchLM?

Claude Fable 5.1 currently has 33 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.6-27B cover on BenchLM?

Qwen3.6-27B currently has 40 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.1 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-1)
- [Qwen3.6-27B vs Claude Fable 5](/compare/claude-fable-vs-qwen3-6-27b)
- [Claude Fable 5.1 vs Claude Opus 5.5](/compare/claude-fable-5-1-vs-claude-opus-5-5)
- [Qwen3.6-27B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-6-27b)

## Explore More

- [Claude Fable 5.1 profile](/models/claude-fable-5-1)
- [Qwen3.6-27B profile](/models/qwen3-6-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)