# Muse Spark 1.1 vs Step 3.7 Flash

> Side-by-side benchmark comparison for Muse Spark 1.1 and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-1-1-vs-step-3-7-flash
- Last updated: October 7, 2026

- Shared sourced benchmarks: 5
- 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 44.21. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 66.7 for Muse Spark 1.1 and 43.9 for Step 3.7 Flash.
- The biggest single benchmark swing is Toolathlon in Agentic, with scores of 75.6% and 49.5%.
- Muse Spark 1.1 also has the larger context window at 1M.

## Model Snapshot

| Property | Muse Spark 1.1 | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Meta | StepFun |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | 65.95 | 44.21 |
| Benchmarks Covered | 26 | 11 |
| Pricing (input/output) | N/A | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Muse Spark 1.1 public-lane score: 56.9 (Supported · #32/122)
- Step 3.7 Flash public-lane score: 36 (Estimated · #71/122)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 80.0% | 59.5% | Muse Spark 1.1 |
| MCP Atlas | 88.1% | Coming soon | Coming soon |
| Toolathlon | 75.6% | 49.5% | Muse Spark 1.1 |
| OSWorld-Verified | 80.8% | Coming soon | Coming soon |
| WebArena-Verified | 69% | Coming soon | Coming soon |
| DeepSearchQA | 84.9% | 92.8% | Step 3.7 Flash |
| CyberGym | 59.0% | Coming soon | Coming soon |
| Finance Agent v2 | 57.2% | Coming soon | Coming soon |
| deepSwe | 53.3% | Coming soon | Coming soon |
| OSWorld 2.0 | 14.2% | Coming soon | Coming soon |
| JobBench | 54.7% | Coming soon | Coming soon |
| Cybench | 92.9% | Coming soon | Coming soon |
| ExploitGym | 0.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 69.3% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 75.8% | Coming soon |
| Claw-Eval | Coming soon | 67.1% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |
| Gert Labs | Coming soon | 51.57% | Coming soon |

### Coding

- Winner: Directional only
- Muse Spark 1.1 public-lane score: 54.2 (Supported · #35/146)
- Step 3.7 Flash public-lane score: 32.2 (Estimated · #90/146)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 80.0% | 59.5% | Muse Spark 1.1 |
| SWE-bench Pro | 61.5% | 56.3% | Muse Spark 1.1 |
| LiveCodeBench (Vals) | 85.9% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Not comparable
- Muse Spark 1.1 public-lane score: 75.7 (Unranked · 3 rankable rows)
- Step 3.7 Flash public-lane score: 73 (Unranked · 2 rankable rows)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MRCR 1M | 54.1% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Muse Spark 1.1 public-lane score: 78.3 (Unranked · 2 rankable rows)
- Step 3.7 Flash public-lane score: 72 (Unranked · 3 rankable rows)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 88.4% | Coming soon | Coming soon |
| BabyVision | 76.3% | Coming soon | Coming soon |
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Muse Spark 1.1 public-lane score: 66.7 (Supported · #21/174)
- Step 3.7 Flash public-lane score: 43.9 (Estimated · #89/174)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| HLE | 62.1% | Coming soon | Coming soon |
| HLE w/o tools | 52.2% | Coming soon | Coming soon |
| HealthBench Professional | 59.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 91.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 88.7% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Muse Spark 1.1 public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 80.6 (#53/125)

## FAQ

### Which is better overall, Muse Spark 1.1 or Step 3.7 Flash?

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

### Where is the biggest gap between Muse Spark 1.1 and Step 3.7 Flash?

The widest category gap is in knowledge, where the averages are 66.7 for Muse Spark 1.1 and 43.9 for Step 3.7 Flash.

### How many benchmarks does Muse Spark 1.1 cover on BenchLM?

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

### How many benchmarks does Step 3.7 Flash cover on BenchLM?

Step 3.7 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Muse Spark 1.1 vs Muse Spark 1.2](/compare/muse-spark-1-1-vs-muse-spark-1-2)
- [Step 3.7 Flash vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-step-3-7-flash)
- [Muse Spark 1.1 vs Muse Spark](/compare/muse-spark-vs-muse-spark-1-1)
- [Step 3.7 Flash vs Muse Spark](/compare/muse-spark-vs-step-3-7-flash)

## Explore More

- [Muse Spark 1.1 profile](/models/muse-spark-1-1)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)