# Muse Spark vs Step 3.7 Flash

> Muse Spark is the stronger model overall, scoring 50.6 to 37.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-spark-vs-step-3-7-flash
- Last updated: 2026-10-11
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Muse Spark 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 leads 35.9 to 21.6.
- The biggest single-benchmark swing is SciCode: 51.5% for Muse Spark and 40% for Step 3.7 Flash.
- Step 3.7 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Muse Spark | Step 3.7 Flash |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 50.6 | 37.3 |
| Rank | 46 | 207 |
| Context | — | 256K |
| Input $/M | — | $0.18 |
| Output $/M | — | $1.11 |
| Weights | Proprietary | Open |

## Coding

- Muse Spark: 46.2 (#69)
- Step 3.7 Flash: 40.0 (#150)

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| SciCode | 51.5% | 40% |
| LMArena Coding | 1481 | — |
| ALE-Bench | — | 694.12 |

## Reasoning

- Muse Spark: 35.9 (#67)
- Step 3.7 Flash: 21.6 (#219)

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| CritPt | 11.3% | 2.3% |
| NYT Connections (extended) | — | 39.7% |
| LMArena Hard Prompts | 1474 | — |
| Epoch Capabilities Index | 152.04 | — |

## Math

- Muse Spark: 47.8 (#66)
- Step 3.7 Flash: 42.9 (#82)

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| OTIS Mock AIME 2024-2025 | 88.9% | — |
| ProofBench | 17% | — |
| LMArena Math | 1455 | — |
| FrontierMath (Feb 2025 set) | 39% | — |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- Muse Spark: 65.7 (#13)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| GPQA Diamond | 89.8% | — |
| Humanity's Last Exam | 40.6% | — |
| LMArena Expert | 1457 | — |

## Multimodal

- Muse Spark: 43.4 (#24)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| LMArena Vision | 1306 | — |
| LMArena Document | 1444 | — |

## Multilingual

- Muse Spark: 56.1 (#24)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1464 | — |
| LMArena Chinese | 1509 | — |
| LMArena French | 1497 | — |
| LMArena German | 1497 | — |
| LMArena Korean | 1459 | — |
| LMArena Russian | 1466 | — |
| LMArena Spanish | 1472 | — |

## Instruction Following

- Muse Spark: 75.9 (#51)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1442 | — |

## Long Context

- Muse Spark: 44.4 (#69)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1451 | — |

## Writing & Preference

- Muse Spark: 66.0 (#39)
- Step 3.7 Flash: —

| Benchmark | Muse Spark | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1474 | — |
| LMArena Creative Writing | 1459 | — |
| LMArena Multi-Turn | 1477 | — |

## FAQ

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

Muse Spark is the stronger model overall, scoring 50.6 to 37.3 on the Noometry Index.

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

Muse Spark scores higher on coding benchmarks: 46.2 versus 40.0 in the Noometry coding category.

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

2 benchmarks have published results for both models. Muse Spark has 27 scored results on Noometry and Step 3.7 Flash has 5.