# Grok 4.20 Multi-Agent vs Muse Spark 1.2

> Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 45.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-20-multi-agent-vs-muse-spark-1-2
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 0 categories and Muse Spark 1.2 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark 1.2 leads 53.9 to 39.7.
- The biggest single-benchmark swing is NYT Connections (extended): 89.6% for Grok 4.20 Multi-Agent and 79.2% for Muse Spark 1.2.
- Grok 4.20 Multi-Agent is cheaper at $1.25 / $2.50 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.2.
- Muse Spark 1.2 accepts more context: 1.05M tokens versus 1M.

## Snapshot

| | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 45.5 | 49.8 |
| Rank | 62 | 44 |
| Context | 1M | 1.05M |
| Input $/M | $1.25 | $1.25 |
| Output $/M | $2.50 | $4.25 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.20 Multi-Agent: 42.4 (#91)
- Muse Spark 1.2: 48.6 (#49)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Coding | 1458 | 1497 |
| DeepSWE | — | 54.9% |
| LMArena WebDev | — | 1532 |
| FrontierSWE | — | 12% |
| SciCode | — | 56.4% |
| WeirdML | — | 60.3% |

## Agentic & Tool Use

- Grok 4.20 Multi-Agent: —
- Muse Spark 1.2: 29.5 (#77)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |
| LMArena Search | 1204 | — |

## Reasoning

- Grok 4.20 Multi-Agent: 42.4 (#44)
- Muse Spark 1.2: 50.4 (#32)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| NYT Connections (extended) | 89.6% | 79.2% |
| LMArena Hard Prompts | 1448 | 1490 |
| SimpleBench | — | 74.5% |
| CritPt | — | 17.7% |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 155.18 |

## Math

- Grok 4.20 Multi-Agent: 36.6 (#106)
- Muse Spark 1.2: 43.8 (#68)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| ProofBench | — | 43% |
| LMArena Math | 1441 | — |

## Knowledge

- Grok 4.20 Multi-Agent: 39.7 (#116)
- Muse Spark 1.2: 53.9 (#49)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Expert | 1445 | 1485 |
| SimpleQA Verified | — | 60.3% |

## Multimodal

- Grok 4.20 Multi-Agent: 39.8 (#44)
- Muse Spark 1.2: 42.6 (#24)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | 1259 | 1304 |

## Multilingual

- Grok 4.20 Multi-Agent: 54.6 (#40)
- Muse Spark 1.2: 57.4 (#10)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1440 | 1479 |
| LMArena Chinese | 1475 | 1519 |
| LMArena Russian | 1457 | 1494 |
| LMArena French | 1467 | — |
| LMArena German | 1456 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1416 | — |
| LMArena Spanish | 1447 | — |

## Instruction Following

- Grok 4.20 Multi-Agent: 75.0 (#80)
- Muse Spark 1.2: 77.1 (#30)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1466 |

## Long Context

- Grok 4.20 Multi-Agent: 43.7 (#84)
- Muse Spark 1.2: 45.4 (#35)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1430 | 1483 |

## Writing & Preference

- Grok 4.20 Multi-Agent: 64.1 (#57)
- Muse Spark 1.2: 72.6 (#14)

| Benchmark | Grok 4.20 Multi-Agent | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1450 | 1486 |
| LMArena Creative Writing | 1435 | 1444 |
| LMArena Multi-Turn | 1451 | 1504 |
| EQ-Bench Creative Writing | — | 1840 |

## FAQ

### Is Grok 4.20 Multi-Agent better than Muse Spark 1.2?

Muse Spark 1.2 is the stronger model overall, scoring 49.8 to 45.5 on the Noometry Index.

### Which is cheaper, Grok 4.20 Multi-Agent or Muse Spark 1.2?

Grok 4.20 Multi-Agent is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

### Is Grok 4.20 Multi-Agent or Muse Spark 1.2 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 48.6 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Muse Spark 1.2 does, with 1.05M tokens against 1M.

### How many benchmarks do Grok 4.20 Multi-Agent and Muse Spark 1.2 share?

13 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Muse Spark 1.2 has 28.