# GPT-6 Sol vs Muse Spark 1.2

> GPT-6 Sol and Muse Spark 1.2 score almost the same on the Noometry Index (49.2 vs 49.8), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gpt-6-sol-vs-muse-spark-1-2
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. GPT-6 Sol scores higher in 3 categories and Muse Spark 1.2 in 7 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-6 Sol leads 59.6 to 48.6.
- The biggest single-benchmark swing is DeepSWE: 68.8% for GPT-6 Sol and 54.9% for Muse Spark 1.2.
- Muse Spark 1.2 is cheaper at $1.25 / $4.25 per million input/output tokens, against $2 / $10 for GPT-6 Sol.
- GPT-6 Sol accepts more context: 1.05M tokens versus 1.05M.

## Snapshot

| | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 49.2 | 49.8 |
| Rank | 46 | 44 |
| Context | 1.05M | 1.05M |
| Input $/M | $2 | $1.25 |
| Output $/M | $10 | $4.25 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-6 Sol: 59.6 (#11)
- Muse Spark 1.2: 48.6 (#49)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| DeepSWE | 68.8% | 54.9% |
| LMArena WebDev | 1692 | 1532 |
| LMArena Coding | 1453 | 1497 |
| FrontierCode | 49.3% | — |
| FrontierSWE | — | 12% |
| SciCode | — | 56.4% |
| WeirdML | — | 60.3% |

## Agentic & Tool Use

- GPT-6 Sol: 33.5 (#49)
- Muse Spark 1.2: 29.5 (#77)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| GDP.pdf | 28% | 16% |
| APEX-Agents | — | 36.4% |

## Reasoning

- GPT-6 Sol: 49.3 (#34)
- Muse Spark 1.2: 50.4 (#32)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| NYT Connections (extended) | 90.1% | 79.2% |
| LMArena Hard Prompts | 1420 | 1490 |
| SimpleBench | — | 74.5% |
| CritPt | — | 17.7% |
| EBR-Bench | 53.3% | — |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 155.18 |

## Math

- GPT-6 Sol: 35.8 (#135)
- Muse Spark 1.2: 43.8 (#68)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| ProofBench | — | 43% |
| LMArena Math | 1404 | — |

## Knowledge

- GPT-6 Sol: 43.0 (#87)
- Muse Spark 1.2: 53.9 (#49)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Expert | 1449 | 1485 |
| SimpleQA Verified | — | 60.3% |
| Vectara Hallucination Rate | 6.5% | — |

## Multimodal

- GPT-6 Sol: 47.6 (#9)
- Muse Spark 1.2: 42.6 (#24)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | — | 1304 |
| Furniture Assembly | 58.3% | — |

## Multilingual

- GPT-6 Sol: 51.0 (#113)
- Muse Spark 1.2: 57.4 (#10)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1389 | 1479 |
| LMArena Chinese | 1416 | 1519 |
| LMArena Russian | 1407 | 1494 |
| LMArena Spanish | 1377 | — |

## Instruction Following

- GPT-6 Sol: 74.4 (#97)
- Muse Spark 1.2: 77.1 (#30)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1406 | 1466 |

## Long Context

- GPT-6 Sol: 43.2 (#100)
- Muse Spark 1.2: 45.4 (#35)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1415 | 1483 |

## Writing & Preference

- GPT-6 Sol: 72.3 (#15)
- Muse Spark 1.2: 72.6 (#14)

| Benchmark | GPT-6 Sol | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1396 | 1486 |
| LMArena Creative Writing | 1392 | 1444 |
| EQ-Bench Creative Writing | 2125 | 1840 |
| LMArena Multi-Turn | 1405 | 1504 |

## FAQ

### Is GPT-6 Sol better than Muse Spark 1.2?

GPT-6 Sol and Muse Spark 1.2 score almost the same on the Noometry Index (49.2 vs 49.8), so choose on price, context window or the category you care about most.

### Which is cheaper, GPT-6 Sol or Muse Spark 1.2?

Muse Spark 1.2 is cheaper. It lists at $1.25 per million input tokens and $4.25 per million output tokens; GPT-6 Sol lists at $2 and $10.

### Is GPT-6 Sol or Muse Spark 1.2 better for coding?

GPT-6 Sol scores higher on coding benchmarks: 59.6 versus 48.6 in the Noometry coding category.

### Which has the bigger context window?

GPT-6 Sol does, with 1.05M tokens against 1.05M.

### How many benchmarks do GPT-6 Sol and Muse Spark 1.2 share?

16 benchmarks have published results for both models. GPT-6 Sol has 22 scored results on Noometry and Muse Spark 1.2 has 28.