# Muse Spark vs Step 3

> Muse Spark is the stronger model overall, scoring 50.6 to 40.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/muse-spark-vs-step-3
- Last updated: 2026-10-12
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Muse Spark scores higher in 9 categories and Step 3 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 36.8.
- Step 3 has downloadable open weights; the other is API-only.

## Snapshot

| | Muse Spark | Step 3 |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 50.6 | 40.5 |
| Rank | 46 | 149 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Muse Spark: 46.2 (#69)
- Step 3: 40.1 (#147)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Coding | 1481 | 1367 |
| SciCode | 51.5% | — |

## Reasoning

- Muse Spark: 35.9 (#67)
- Step 3: 28.4 (#105)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Hard Prompts | 1474 | 1355 |
| Kagi LLM Benchmark | — | 62.3% |
| CritPt | 11.3% | — |
| Epoch Capabilities Index | 152.04 | — |

## Math

- Muse Spark: 47.8 (#66)
- Step 3: 37.6 (#148)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Math | 1455 | 1366 |
| OTIS Mock AIME 2024-2025 | 88.9% | — |
| ProofBench | 17% | — |
| FrontierMath (Feb 2025 set) | 39% | — |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- Muse Spark: 65.7 (#13)
- Step 3: 36.8 (#164)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Expert | 1457 | 1333 |
| GPQA Diamond | 89.8% | — |
| Humanity's Last Exam | 40.6% | — |

## Multimodal

- Muse Spark: 43.4 (#24)
- Step 3: 35.5 (#86)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Vision | 1306 | 1177 |
| LMArena Document | 1444 | — |

## Multilingual

- Muse Spark: 56.1 (#24)
- Step 3: 46.3 (#159)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Non-English | 1464 | 1327 |
| LMArena Chinese | 1509 | 1397 |
| LMArena German | 1497 | 1371 |
| LMArena Korean | 1459 | 1269 |
| LMArena Russian | 1466 | 1331 |
| LMArena Spanish | 1472 | 1371 |
| LMArena French | 1497 | — |

## Instruction Following

- Muse Spark: 75.9 (#51)
- Step 3: 70.4 (#164)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1442 | 1332 |

## Long Context

- Muse Spark: 44.4 (#69)
- Step 3: 40.3 (#157)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Longer Query | 1451 | 1326 |

## Writing & Preference

- Muse Spark: 66.0 (#39)
- Step 3: 54.3 (#151)

| Benchmark | Muse Spark | Step 3 |
|---|---|---|
| LMArena Text | 1474 | 1350 |
| LMArena Creative Writing | 1459 | 1321 |
| LMArena Multi-Turn | 1477 | 1341 |

## FAQ

### Is Muse Spark better than Step 3?

Muse Spark is the stronger model overall, scoring 50.6 to 40.5 on the Noometry Index.

### Is Muse Spark or Step 3 better for coding?

Muse Spark scores higher on coding benchmarks: 46.2 versus 40.1 in the Noometry coding category.

### How many benchmarks do Muse Spark and Step 3 share?

16 benchmarks have published results for both models. Muse Spark has 27 scored results on Noometry and Step 3 has 17.