# Grok 4.20 Multi-Agent vs MiMo-V2-Omni

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 42.9 on the Noometry Index. MiMo-V2-Omni costs 8.9× 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-mimo-v2-omni
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 5 categories and MiMo-V2-Omni in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 42.4 to 28.6.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 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 262K.

## Snapshot

| | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 45.5 | 42.9 |
| Rank | 62 | 91 |
| Context | 1M | 262K |
| Input $/M | $1.25 | $0.14 |
| Output $/M | $2.50 | $0.28 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.20 Multi-Agent: 42.4 (#91)
- MiMo-V2-Omni: 42.7 (#87)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Coding | 1458 | 1467 |

## Agentic & Tool Use

- Grok 4.20 Multi-Agent: —
- MiMo-V2-Omni: —

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Search | 1204 | — |

## Reasoning

- Grok 4.20 Multi-Agent: 42.4 (#44)
- MiMo-V2-Omni: 28.6 (#86)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1445 |
| NYT Connections (extended) | 89.6% | — |

## Math

- Grok 4.20 Multi-Agent: 36.6 (#106)
- MiMo-V2-Omni: 36.4 (#112)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Math | 1441 | 1432 |

## Knowledge

- Grok 4.20 Multi-Agent: 39.7 (#116)
- MiMo-V2-Omni: 39.9 (#114)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Expert | 1445 | 1449 |

## Multimodal

- Grok 4.20 Multi-Agent: 39.8 (#44)
- MiMo-V2-Omni: 37.9 (#62)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | 1259 | 1228 |

## Multilingual

- Grok 4.20 Multi-Agent: 54.6 (#40)
- MiMo-V2-Omni: 52.0 (#97)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | 1440 | 1404 |
| LMArena Chinese | 1475 | 1469 |
| LMArena French | 1467 | 1448 |
| LMArena German | 1456 | 1398 |
| LMArena Japanese | 1405 | 1318 |
| LMArena Korean | 1416 | 1355 |
| LMArena Russian | 1457 | 1412 |
| LMArena Spanish | 1447 | 1432 |

## Instruction Following

- Grok 4.20 Multi-Agent: 75.0 (#80)
- MiMo-V2-Omni: 75.4 (#62)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | 1420 | 1428 |

## Long Context

- Grok 4.20 Multi-Agent: 43.7 (#84)
- MiMo-V2-Omni: 44.1 (#72)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | 1430 | 1442 |

## Writing & Preference

- Grok 4.20 Multi-Agent: 64.1 (#57)
- MiMo-V2-Omni: 61.6 (#83)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | 1450 | 1424 |
| LMArena Creative Writing | 1435 | 1393 |
| LMArena Multi-Turn | 1451 | 1446 |

## FAQ

### Is Grok 4.20 Multi-Agent better than MiMo-V2-Omni?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 42.9 on the Noometry Index. MiMo-V2-Omni costs 8.9× 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 MiMo-V2-Omni?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Grok 4.20 Multi-Agent or MiMo-V2-Omni better for coding?

They score almost the same on coding (42.4 vs 42.7); test both on your own repository before choosing.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 262K.

### How many benchmarks do Grok 4.20 Multi-Agent and MiMo-V2-Omni share?

18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and MiMo-V2-Omni has 18.