# Muse Spark 1.1 vs Step 3.7 Flash

> Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 36.5 on the Noometry Index. Step 3.7 Flash costs 4.8× less per token, which makes it the better buy when Muse Spark 1.1's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/muse-spark-1-1-vs-step-3-7-flash
- Last updated: 2026-10-10
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Muse Spark 1.1 scores higher in 3 categories and Step 3.7 Flash in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.1 leads 45.9 to 20.9.
- The biggest single-benchmark swing is NYT Connections (extended): 84.9% for Muse Spark 1.1 and 39.7% for Step 3.7 Flash.
- Step 3.7 Flash is cheaper at $0.18 / $1.11 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.1.
- Muse Spark 1.1 accepts more context: 1.05M tokens versus 256K.
- Step 3.7 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 49.9 | 36.5 |
| Rank | 43 | 207 |
| Context | 1.05M | 256K |
| Input $/M | $1.25 | $0.18 |
| Output $/M | $4.25 | $1.11 |
| Weights | Proprietary | Open |

## Coding

- Muse Spark 1.1: 50.8 (#38)
- Step 3.7 Flash: 39.4 (#147)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| SciCode | 58.8% | 40% |
| DeepSWE | 53.3% | — |
| LMArena WebDev | 1542 | — |
| LMArena Coding | 1497 | — |
| ALE-Bench | — | 694.12 |

## Agentic & Tool Use

- Muse Spark 1.1: 33.9 (#45)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| τ²-bench Banking | 40.5% | — |
| GBAEval | 7.9% | — |
| GDP.pdf | 15% | — |
| Vending-Bench 2 | 6,520 | — |

## Reasoning

- Muse Spark 1.1: 45.9 (#41)
- Step 3.7 Flash: 20.9 (#211)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | 84.9% | 39.7% |
| CritPt | 15.1% | 2.3% |
| LMArena Hard Prompts | 1486 | — |
| DTBench | 94.4% | — |
| LMCA | 49.9% | — |
| Surface Evolver Bench | 52.5% | — |
| Epoch Capabilities Index | 154.32 | — |

## Math

- Muse Spark 1.1: 44.0 (#67)
- Step 3.7 Flash: 40.9 (#74)

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| ProofBench | 39% | — |
| LMArena Math | 1477 | — |

## Knowledge

- Muse Spark 1.1: 52.8 (#55)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| SimpleQA Verified | 57.8% | — |
| LMArena Expert | 1480 | — |

## Multimodal

- Muse Spark 1.1: 41.9 (#28)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| LMArena Vision | 1292 | — |
| LMArena Document | 1465 | — |

## Multilingual

- Muse Spark 1.1: 56.8 (#16)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1471 | — |
| LMArena Chinese | 1518 | — |
| LMArena French | 1494 | — |
| LMArena German | 1466 | — |
| LMArena Japanese | 1445 | — |
| LMArena Korean | 1459 | — |
| LMArena Russian | 1482 | — |
| LMArena Spanish | 1471 | — |

## Instruction Following

- Muse Spark 1.1: 76.8 (#36)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1457 | — |

## Long Context

- Muse Spark 1.1: 44.8 (#55)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1463 | — |

## Writing & Preference

- Muse Spark 1.1: 73.6 (#11)
- Step 3.7 Flash: —

| Benchmark | Muse Spark 1.1 | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1479 | — |
| LMArena Creative Writing | 1440 | — |
| EQ-Bench Creative Writing | 1927 | — |
| EQ-Bench 4 | 1260 | — |
| LMArena Multi-Turn | 1484 | — |

## FAQ

### Is Muse Spark 1.1 better than Step 3.7 Flash?

Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 36.5 on the Noometry Index. Step 3.7 Flash costs 4.8× less per token, which makes it the better buy when Muse Spark 1.1's lead doesn't matter for your workload.

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

Step 3.7 Flash is cheaper. It lists at $0.18 per million input tokens and $1.11 per million output tokens; Muse Spark 1.1 lists at $1.25 and $4.25.

### Is Muse Spark 1.1 or Step 3.7 Flash better for coding?

Muse Spark 1.1 scores higher on coding benchmarks: 50.8 versus 39.4 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.1 does, with 1.05M tokens against 256K.

### How many benchmarks do Muse Spark 1.1 and Step 3.7 Flash share?

3 benchmarks have published results for both models. Muse Spark 1.1 has 36 scored results on Noometry and Step 3.7 Flash has 5.