# Grok 4.20 Multi-Agent vs Solar Pro4

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 42.1 on the Noometry Index. Solar Pro4 costs 3.0× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-4-20-multi-agent-vs-solar-pro4
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 8 categories and Solar Pro4 in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 28.5.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 524K.

## Snapshot

| | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| Provider | xAI | Upstage |
| Noometry Index | 46.2 | 42.1 |
| Rank | 65 | 121 |
| Context | 1M | 524K |
| Input $/M | $1.25 | $0.30 |
| Output $/M | $2.50 | $1.20 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.20 Multi-Agent: 43.0 (#92)
- Solar Pro4: 40.1 (#149)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1457 | 1437 |
| LMArena WebDev | — | 1371 |

## Agentic & Tool Use

- Grok 4.20 Multi-Agent: —
- Solar Pro4: —

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Search | 1204 | — |

## Reasoning

- Grok 4.20 Multi-Agent: 43.9 (#48)
- Solar Pro4: 28.5 (#104)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1399 |
| NYT Connections (extended) | 89.6% | — |

## Math

- Grok 4.20 Multi-Agent: 39.4 (#104)
- Solar Pro4: 38.8 (#128)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Math | 1442 | 1416 |

## Knowledge

- Grok 4.20 Multi-Agent: 40.4 (#119)
- Solar Pro4: 39.8 (#129)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1445 | 1427 |

## Multimodal

- Grok 4.20 Multi-Agent: 40.5 (#48)
- Solar Pro4: —

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Vision | 1259 | — |

## Multilingual

- Grok 4.20 Multi-Agent: 54.4 (#43)
- Solar Pro4: 48.7 (#139)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1440 | 1361 |
| LMArena Chinese | 1475 | 1415 |
| LMArena French | 1466 | 1397 |
| LMArena German | 1456 | 1364 |
| LMArena Japanese | 1405 | 1309 |
| LMArena Korean | 1416 | 1382 |
| LMArena Russian | 1457 | 1360 |
| LMArena Spanish | 1447 | 1401 |

## Instruction Following

- Grok 4.20 Multi-Agent: 74.8 (#84)
- Solar Pro4: 72.7 (#132)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1377 |

## Long Context

- Grok 4.20 Multi-Agent: 43.7 (#88)
- Solar Pro4: 42.1 (#130)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1431 | 1381 |

## Writing & Preference

- Grok 4.20 Multi-Agent: 64.0 (#59)
- Solar Pro4: 56.5 (#138)

| Benchmark | Grok 4.20 Multi-Agent | Solar Pro4 |
|---|---|---|
| LMArena Text | 1450 | 1386 |
| LMArena Creative Writing | 1436 | 1316 |
| LMArena Multi-Turn | 1452 | 1385 |

## FAQ

### Is Grok 4.20 Multi-Agent better than Solar Pro4?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 42.1 on the Noometry Index. Solar Pro4 costs 3.0× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

### Which is cheaper, Grok 4.20 Multi-Agent or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Grok 4.20 Multi-Agent or Solar Pro4 better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 40.1 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 524K.

### How many benchmarks do Grok 4.20 Multi-Agent and Solar Pro4 share?

17 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Solar Pro4 has 18.