# Claude Haiku 4.5 vs Muse Spark 1.1

> Side-by-side benchmark comparison for Claude Haiku 4.5 and Muse Spark 1.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-vs-muse-spark-1-1
- Last updated: October 7, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Muse Spark 1.1 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Muse Spark 1.1 has the higher overall point estimate 65.95 to 41.55. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 19.1 for Claude Haiku 4.5 and 54.2 for Muse Spark 1.1.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 41.2% and 85.9%.
- Muse Spark 1.1 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Haiku 4.5 | Muse Spark 1.1 |
|----------|----------|----------|
| Creator | Anthropic | Meta |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Overall Score | 41.55 | 65.95 |
| Benchmarks Covered | 10 | 26 |
| Pricing (input/output) | $1.00 / $5.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Muse Spark 1.1
- Claude Haiku 4.5 public-lane score: 21.9 (Supported · #100/122)
- Muse Spark 1.1 public-lane score: 56.9 (Supported · #32/122)

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | 54.7% | Muse Spark 1.1 |
| Terminal-Bench 2.1 (Vals) | 43.8% | 69.3% | Muse Spark 1.1 |
| 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 |
| OSWorld 2.0 | Coming soon | 14.2% | Coming soon |
| Cybench | Coming soon | 92.9% | Coming soon |
| ExploitGym | Coming soon | 0.8% | Coming soon |

### Coding

- Winner: Muse Spark 1.1
- Claude Haiku 4.5 public-lane score: 19.1 (Supported · #121/146)
- Muse Spark 1.1 public-lane score: 54.2 (Supported · #35/146)

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | Coming soon | Coming soon |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | 85.9% | Muse Spark 1.1 |
| SWE-bench (Vals) | 66.6% | 82.0% | Muse Spark 1.1 |
| Terminal-Bench 2.1 | Coming soon | 80.0% | Coming soon |
| SWE-bench Pro | Coming soon | 61.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Muse Spark 1.1 public-lane score: 75.7 (Unranked · 3 rankable rows)

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| MRCR 1M | Coming soon | 54.1% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: Coming soon
- Muse Spark 1.1 public-lane score: 78.3 (Unranked · 2 rankable rows)

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 88.4% | Coming soon |
| BabyVision | Coming soon | 76.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Haiku 4.5 public-lane score: 34.7 (Estimated · #123/174)
- Muse Spark 1.1 public-lane score: 66.7 (Supported · #21/174)

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | 91.2% | Muse Spark 1.1 |
| MMLU-Pro (Vals) | 78.7% | 88.7% | Muse Spark 1.1 |
| HLE | Coming soon | 62.1% | Coming soon |
| HLE w/o tools | Coming soon | 52.2% | Coming soon |
| HealthBench Professional | Coming soon | 59.3% | Coming soon |

### Mathematics

- Winner: Not comparable
- Claude Haiku 4.5 public-lane score: 28.8 (Unranked · 2 rankable rows)
- Muse Spark 1.1 public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Muse Spark 1.1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 5.903% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 2.083% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Haiku 4.5 or Muse Spark 1.1?

Muse Spark 1.1 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Haiku 4.5 and Muse Spark 1.1?

The widest category gap is in coding, where the averages are 19.1 for Claude Haiku 4.5 and 54.2 for Muse Spark 1.1.

### How many benchmarks does Claude Haiku 4.5 cover on BenchLM?

Claude Haiku 4.5 currently has 10 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 Haiku 4.5 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Muse Spark 1.1 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-muse-spark-1-1)
- [Claude Haiku 4.5 vs Muse Spark 1.2](/compare/claude-haiku-4-5-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 Haiku 4.5 profile](/models/claude-haiku-4-5)
- [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)