Model comparison
Muse Glimmer vs Step 3
Muse Glimmer is the stronger model overall, scoring 41.7 to 40.5 on the Noometry Index.
Last verified . 12 shared benchmarks.
Meta
StepFunSummary
- They share 12 benchmarks with published results for both. Muse Glimmer scores higher in 7 categories and Step 3 in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in multilingual, where Muse Glimmer leads 50.5 to 46.3.
Side by side
| Muse Glimmer | Step 3 | |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 41.7 | 40.5 |
| Released | 2026-08-10 | — |
| Weights | Open | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 15 | 17 |
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Category by category
Coding Too close to call
Muse Glimmer: 40.4 (#142), Step 3: 40.1 (#147)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Coding | 1416 | 1367 |
| LMArena WebDev | 1355 | — |
| SciCode | 44.9% | — |
Reasoning Step 3 leads
Muse Glimmer: 25.7 (#144), Step 3: 28.4 (#105)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1355 |
| Kagi LLM Benchmark | — | 62.3% |
| CritPt | 2.6% | — |
Math Muse Glimmer leads
Muse Glimmer: 38.8 (#125), Step 3: 37.6 (#148)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Math | 1417 | 1366 |
Knowledge Muse Glimmer leads
Muse Glimmer: 38.5 (#143), Step 3: 36.8 (#164)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Expert | 1386 | 1333 |
Multimodal Not comparable
Muse Glimmer: —, Step 3: 35.5 (#86)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Vision | — | 1177 |
Multilingual Muse Glimmer leads
Muse Glimmer: 50.5 (#122), Step 3: 46.3 (#159)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Non-English | 1384 | 1327 |
| LMArena Chinese | 1412 | 1397 |
| LMArena Russian | 1390 | 1331 |
| LMArena German | — | 1371 |
| LMArena Korean | — | 1269 |
| LMArena Spanish | — | 1371 |
Instruction Following Muse Glimmer leads
Muse Glimmer: 72.6 (#135), Step 3: 70.4 (#164)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1375 | 1332 |
Long Context Muse Glimmer leads
Muse Glimmer: 42.1 (#129), Step 3: 40.3 (#157)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Longer Query | 1382 | 1326 |
Writing & Preference Muse Glimmer leads
Muse Glimmer: 57.5 (#126), Step 3: 54.3 (#151)
| Benchmark | Muse Glimmer | Step 3 |
|---|---|---|
| LMArena Text | 1389 | 1350 |
| LMArena Creative Writing | 1339 | 1321 |
| LMArena Multi-Turn | 1399 | 1341 |
Frequently asked questions
Is Muse Glimmer better than Step 3?
Muse Glimmer is the stronger model overall, scoring 41.7 to 40.5 on the Noometry Index.
Is Muse Glimmer or Step 3 better for coding?
They score almost the same on coding (40.4 vs 40.1); test both on your own repository before choosing.
How many benchmarks do Muse Glimmer and Step 3 share?
12 benchmarks have published results for both models. Muse Glimmer has 15 scored results on Noometry and Step 3 has 17.