# Claude Fable 5.1 vs Muse Spark 1.1

> Side-by-side benchmark comparison for Claude Fable 5.1 and Muse Spark 1.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-fable-5-1-vs-muse-spark-1-1
- Last updated: October 17, 2026

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

## Quick Verdict

Pick Claude Fable 5.1 if you want the stronger benchmark profile. Muse Spark 1.1 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Fable 5.1 leads overall 83.18 to 66.02.
- The clearest category separation is in coding, where the averages are 76.8 for Claude Fable 5.1 and 52.7 for Muse Spark 1.1.
- The biggest single benchmark swing is OSWorld 2.0 in Agentic, with scores of 41.7% and 14.2%.

## Model Snapshot

| Property | Claude Fable 5.1 | Muse Spark 1.1 |
|----------|----------|----------|
| Creator | Anthropic | Meta |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 83.18 | 66.02 |
| Benchmarks Covered | 33 | 26 |
| Pricing (input/output) | $10.00 / $50.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Claude Fable 5.1
- Claude Fable 5.1 public-lane score: 80.9 (Supported · #2/128)
- Muse Spark 1.1 public-lane score: 58.6 (Supported · #33/128)

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | 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% | 14.2% | Claude Fable 5.1 |
| 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% | 69.3% | Claude Fable 5.1 |
| ApprenticeBench | 72% | Coming soon | Coming soon |
| CWE-bench v1 | 58.0% | Coming soon | Coming soon |
| MazeBench | 10% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 80.0% | Coming soon |
| MCP Atlas | Coming soon | 88.1% | Coming soon |
| Toolathlon | Coming soon | 75.6% | Coming soon |
| OSWorld-Verified | Coming soon | 80.8% | Coming soon |
| WebArena-Verified | Coming soon | 69% | Coming soon |
| DeepSearchQA | Coming soon | 84.9% | Coming soon |
| CyberGym | Coming soon | 59.0% | Coming soon |
| Finance Agent v2 | Coming soon | 57.2% | Coming soon |
| deepSwe | Coming soon | 53.3% | Coming soon |
| JobBench | Coming soon | 54.7% | Coming soon |
| Cybench | Coming soon | 92.9% | Coming soon |
| ExploitGym | Coming soon | 0.8% | Coming soon |

### Coding

- Winner: Claude Fable 5.1
- Claude Fable 5.1 public-lane score: 76.8 (Supported · #3/150)
- Muse Spark 1.1 public-lane score: 52.7 (Supported · #39/150)

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| Bug Hunt Bench | 43.0 fixes | Coming soon | Coming soon |
| SWE-bench Pro | 81.2% | 61.5% | Claude Fable 5.1 |
| SWE Multilingual | 89.1% | Coming soon | Coming soon |
| 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% | 85.9% | Claude Fable 5.1 |
| CursorBench 4.0 | 51.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 40.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 80.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 82.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: 85.2 (#4/28)
- Muse Spark 1.1 public-lane score: 79.2 (Unranked · 3 rankable rows)

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | 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 |
| MRCR 1M | Coming soon | 54.1% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Muse Spark 1.1 public-lane score: 81.9 (Unranked · 2 rankable rows)

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 88.4% | Coming soon |
| BabyVision | Coming soon | 76.3% | Coming soon |

### Knowledge

- Winner: Claude Fable 5.1
- Claude Fable 5.1 public-lane score: 86.9 (Supported · #2/184)
- Muse Spark 1.1 public-lane score: 68.5 (Supported · #23/184)

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 65% | 62.1% | Claude Fable 5.1 |
| HLE w/o tools | 60.9% | 52.2% | Claude Fable 5.1 |
| GPQA Diamond (Vals) | 93.4% | 91.2% | Claude Fable 5.1 |
| MMLU-Pro (Vals) | 92.4% | 88.7% | Claude Fable 5.1 |
| HealthBench Professional | Coming soon | 59.3% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Fable 5.1 public-lane score: Coming soon
- Muse Spark 1.1 public-lane score: Coming soon

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | 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)
- Muse Spark 1.1 public-lane score: Coming soon

| Benchmark | Claude Fable 5.1 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 90.175% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 87.805% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Fable 5.1 or Muse Spark 1.1?

Claude Fable 5.1 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Fable 5.1 and Muse Spark 1.1?

The widest category gap is in coding, where the averages are 76.8 for Claude Fable 5.1 and 52.7 for Muse Spark 1.1.

### 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 Muse Spark 1.1 cover on BenchLM?

Muse Spark 1.1 currently has 26 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Fable 5.1 vs Claude Fable 5](/compare/claude-fable-vs-claude-fable-5-1)
- [Muse Spark 1.1 vs Claude Fable 5](/compare/claude-fable-vs-muse-spark-1-1)
- [Claude Fable 5.1 vs Muse Spark 1.2](/compare/claude-fable-5-1-vs-muse-spark-1-2)
- [Muse Spark 1.1 vs Muse Spark 1.2](/compare/muse-spark-1-1-vs-muse-spark-1-2)

## Explore More

- [Claude Fable 5.1 profile](/models/claude-fable-5-1)
- [Muse Spark 1.1 profile](/models/muse-spark-1-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)