Model comparison
Muse Spark 1.3 vs Step 2 16k Exp 202412
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 39.2 on the Noometry Index.
Last verified . 12 shared benchmarks.
Meta
StepFunSummary
- They share 12 benchmarks with published results for both. Muse Spark 1.3 scores higher in 8 categories and Step 2 16k Exp 202412 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 36.3.
Side by side
| Muse Spark 1.3 | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 54.8 | 39.2 |
| Released | 2026-09-02 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 131K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $4.25 | — |
| Results tracked | 37 | 12 |
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Category by category
Coding Muse Spark 1.3 leads
Muse Spark 1.3: 56.6 (#21), Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1514 | 1316 |
| CursorBench | 41.6% | — |
| LMArena WebDev | 1657 | — |
| SciCode | 59.7% | — |
Agentic & Tool Use Not comparable
Muse Spark 1.3: 38.6 (#30), Step 2 16k Exp 202412: —
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| APEX-Agents | 57.8% | — |
| GDP.pdf | 27.6% | — |
Reasoning Muse Spark 1.3 leads
Muse Spark 1.3: 54.0 (#27), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1503 | 1299 |
| NYT Connections (extended) | 85.1% | — |
| CritPt | 26% | — |
| Chess Puzzles | 38% | — |
| Mystery Game Puzzles | 25% | — |
| DTBench | 96.5% | — |
| LMCA | 53.9% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 156.75 | — |
Math Muse Spark 1.3 leads
Muse Spark 1.3: 73.1 (#21), Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1494 | 1304 |
| FrontierMath (Tiers 1-3) | 74.4% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 99.2% | — |
| ProofBench | 58% | — |
Knowledge Muse Spark 1.3 leads
Muse Spark 1.3: 42.6 (#95), Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1516 | 1279 |
Multimodal Not comparable
Muse Spark 1.3: 43.7 (#22), Step 2 16k Exp 202412: —
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1309 | — |
| LMArena Document | 1471 | — |
Multilingual Muse Spark 1.3 leads
Muse Spark 1.3: 57.4 (#8), Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1481 | 1290 |
| LMArena Chinese | 1529 | 1331 |
| LMArena Russian | 1490 | 1324 |
| LMArena French | 1524 | — |
| LMArena German | 1515 | — |
| LMArena Japanese | 1474 | — |
| LMArena Korean | 1501 | — |
| LMArena Spanish | 1490 | — |
Instruction Following Muse Spark 1.3 leads
Muse Spark 1.3: 77.5 (#22), Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1477 | 1287 |
Long Context Muse Spark 1.3 leads
Muse Spark 1.3: 45.6 (#32), Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1488 | 1307 |
Writing & Preference Muse Spark 1.3 leads
Muse Spark 1.3: 73.6 (#9), Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Muse Spark 1.3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1490 | 1321 |
| LMArena Creative Writing | 1455 | 1328 |
| LMArena Multi-Turn | 1482 | 1292 |
| EQ-Bench Creative Writing | 1906 | — |
Frequently asked questions
Is Muse Spark 1.3 better than Step 2 16k Exp 202412?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 39.2 on the Noometry Index.
Is Muse Spark 1.3 or Step 2 16k Exp 202412 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 38.5 in the Noometry coding category.
How many benchmarks do Muse Spark 1.3 and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Muse Spark 1.3 has 37 scored results on Noometry and Step 2 16k Exp 202412 has 12.