Model comparison
Muse Spark 1.2 vs o1
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 40.9 on the Noometry Index.
Last verified . 21 shared benchmarks.
MetaSummary
- They share 21 benchmarks with published results for both. Muse Spark 1.2 scores higher in 9 categories and o1 in 1 category; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 27.9.
- The biggest single-benchmark swing is SimpleBench: 74.5% for Muse Spark 1.2 and 41.7% for o1.
- Muse Spark 1.2 is cheaper at $1.25 / $4.25 per million input/output tokens, against $15 / $60 for o1.
- Muse Spark 1.2 accepts more context: 1.05M tokens versus 200K.
Side by side
| Muse Spark 1.2 | o1 | |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 50.3 | 40.9 |
| Released | 2026-08-05 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 200K |
| Max output | 131K | 100K |
| Input $ / M tokens | $1.25 | $15 |
| Output $ / M tokens | $4.25 | $60 |
| Results tracked | 31 | 52 |
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Category by category
Coding Muse Spark 1.2 leads
Muse Spark 1.2: 49.2 (#51), o1: 46.1 (#70)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| WeirdML | 60.3% | 47.6% |
| LMArena Coding | 1495 | 1367 |
| DeepSWE | 54.9% | — |
| Aider Polyglot | — | 61.7% |
| LMArena WebDev | 1533 | — |
| FrontierSWE | 12% | — |
| SciCode | 56.4% | — |
| LiveBench Coding | — | 69.7% |
| CadEval | — | 56% |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |
Agentic & Tool Use Muse Spark 1.2 leads
Muse Spark 1.2: 29.4 (#87), o1: 24.6 (#117)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| APEX-Agents | 36.4% | — |
| Cybench | — | 10% |
| GDP.pdf | 16% | — |
| METR Time Horizons | — | 51.1% |
Reasoning Muse Spark 1.2 leads
Muse Spark 1.2: 51.3 (#34), o1: 27.9 (#111)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| SimpleBench | 74.5% | 41.7% |
| LMArena Hard Prompts | 1486 | 1371 |
| DTBench | 94.7% | 74.7% |
| LMCA | 48.4% | 22.3% |
| Epoch Capabilities Index | 154.87 | 141.91 |
| NYT Connections (extended) | 79.2% | — |
| ARC-AGI-1 | — | 30.7% |
| CritPt | 17.7% | — |
| Chess Puzzles | — | 15% |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| LiveBench Data Analysis | — | 65.5% |
| LiveBench | — | 75.7% |
Math Muse Spark 1.2 leads
Muse Spark 1.2: 46.4 (#70), o1: 36.1 (#175)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Math | 1471 | 1388 |
| FrontierMath (Tiers 1-3) | — | 14.7% |
| OTIS Mock AIME 2024-2025 | — | 73.3% |
| ProofBench | 43% | — |
| LiveBench Math | — | 80.3% |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |
Knowledge Muse Spark 1.2 leads
Muse Spark 1.2: 54.1 (#53), o1: 41.5 (#110)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| SimpleQA Verified | 60.3% | 41.1% |
| LMArena Expert | 1480 | 1361 |
| GPQA Diamond | — | 76.8% |
| Humanity's Last Exam | — | 8% |
| Confabulations | — | 11.7% |
Multimodal Muse Spark 1.2 leads
Muse Spark 1.2: 43.4 (#25), o1: 34.2 (#93)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Vision | 1305 | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| SpatialViz-Bench | — | 41.4% |
Multilingual Muse Spark 1.2 leads
Muse Spark 1.2: 57.1 (#11), o1: 48.6 (#142)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Non-English | 1478 | 1358 |
| LMArena Chinese | 1511 | 1394 |
| LMArena French | 1513 | 1344 |
| LMArena Russian | 1487 | 1356 |
| LMArena Spanish | 1498 | 1345 |
| LMArena German | — | 1337 |
| LMArena Japanese | — | 1346 |
| LMArena Korean | — | 1396 |
Instruction Following Muse Spark 1.2 leads
Muse Spark 1.2: 76.7 (#36), o1: 74.8 (#86)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Instruction Following | 1461 | 1367 |
| LiveBench Instruction Following | — | 81.5% |
Long Context o1 leads
Muse Spark 1.2: 45.2 (#48), o1: 50.3 (#9)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Longer Query | 1475 | 1378 |
| Fiction.LiveBench | — | 83.3% |
Writing & Preference Muse Spark 1.2 leads
Muse Spark 1.2: 72.3 (#14), o1: 55.6 (#144)
| Benchmark | Muse Spark 1.2 | o1 |
|---|---|---|
| LMArena Text | 1482 | 1366 |
| LMArena Creative Writing | 1449 | 1348 |
| LMArena Multi-Turn | 1494 | 1369 |
| Short-Story Creative Writing | — | 70.2% |
| EQ-Bench Creative Writing | 1840 | — |
| LiveBench Language | — | 65.4% |
Frequently asked questions
Is Muse Spark 1.2 better than o1?
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 40.9 on the Noometry Index.
Which is cheaper, Muse Spark 1.2 or o1?
Muse Spark 1.2 is cheaper. It lists at $1.25 per million input tokens and $4.25 per million output tokens; o1 lists at $15 and $60.
Is Muse Spark 1.2 or o1 better for coding?
Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 46.1 in the Noometry coding category.
Which has the bigger context window?
Muse Spark 1.2 does, with 1.05M tokens against 200K.
How many benchmarks do Muse Spark 1.2 and o1 share?
21 benchmarks have published results for both models. Muse Spark 1.2 has 31 scored results on Noometry and o1 has 52.