# Grok 4.20 Multi-Agent vs MiMo-V2.5

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.4 on the Noometry Index. MiMo-V2.5 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-v2-5
- 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-V2.5 in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 28.6.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- MiMo-V2.5 accepts more context: 1.05M tokens versus 1M.
- MiMo-V2.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 46.2 | 43.4 |
| Rank | 65 | 93 |
| Context | 1M | 1.05M |
| Input $/M | $1.25 | $0.14 |
| Output $/M | $2.50 | $0.28 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.20 Multi-Agent: 43.0 (#92)
- MiMo-V2.5: 43.9 (#81)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1457 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |

## Agentic & Tool Use

- Grok 4.20 Multi-Agent: —
- MiMo-V2.5: —

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Search | 1204 | — |

## Reasoning

- Grok 4.20 Multi-Agent: 43.9 (#48)
- MiMo-V2.5: 28.6 (#101)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1450 |
| NYT Connections (extended) | 89.6% | — |
| CritPt | — | 3.7% |

## Math

- Grok 4.20 Multi-Agent: 39.4 (#104)
- MiMo-V2.5: 36.8 (#163)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1442 | 1436 |
| ProofBench | — | 16% |

## Knowledge

- Grok 4.20 Multi-Agent: 40.4 (#119)
- MiMo-V2.5: 40.8 (#115)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1445 | 1460 |

## Multimodal

- Grok 4.20 Multi-Agent: 40.5 (#48)
- MiMo-V2.5: 39.8 (#54)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | 1259 | 1247 |

## Multilingual

- Grok 4.20 Multi-Agent: 54.4 (#43)
- MiMo-V2.5: 51.9 (#99)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1440 | 1404 |
| LMArena Chinese | 1475 | 1468 |
| LMArena French | 1466 | 1447 |
| LMArena German | 1456 | 1421 |
| LMArena Japanese | 1405 | 1306 |
| LMArena Korean | 1416 | 1363 |
| LMArena Russian | 1457 | 1395 |
| LMArena Spanish | 1447 | 1416 |

## Instruction Following

- Grok 4.20 Multi-Agent: 74.8 (#84)
- MiMo-V2.5: 75.5 (#60)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1434 |

## Long Context

- Grok 4.20 Multi-Agent: 43.7 (#88)
- MiMo-V2.5: 44.2 (#73)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1431 | 1445 |

## Writing & Preference

- Grok 4.20 Multi-Agent: 64.0 (#59)
- MiMo-V2.5: 61.6 (#86)

| Benchmark | Grok 4.20 Multi-Agent | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1450 | 1428 |
| LMArena Creative Writing | 1436 | 1393 |
| LMArena Multi-Turn | 1452 | 1445 |

## FAQ

### Is Grok 4.20 Multi-Agent better than MiMo-V2.5?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.4 on the Noometry Index. MiMo-V2.5 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-V2.5?

MiMo-V2.5 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-V2.5 better for coding?

They score almost the same on coding (43.0 vs 43.9); test both on your own repository before choosing.

### Which has the bigger context window?

MiMo-V2.5 does, with 1.05M tokens against 1M.

### How many benchmarks do Grok 4.20 Multi-Agent and MiMo-V2.5 share?

18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and MiMo-V2.5 has 23.