# Grok 4.3 vs MiMo-V2-Omni

> Grok 4.3 and MiMo-V2-Omni score almost the same on the Noometry Index (43.6 vs 42.9), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/grok-4-3-vs-mimo-v2-omni
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Grok 4.3 scores higher in 3 categories and MiMo-V2-Omni in 6 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 39.9.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
- Grok 4.3 accepts more context: 1M tokens versus 262K.

## Snapshot

| | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 43.6 | 42.9 |
| Rank | 80 | 91 |
| Context | 1M | 262K |
| Input $/M | $1.25 | $0.14 |
| Output $/M | $2.50 | $0.28 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.3: 41.3 (#117)
- MiMo-V2-Omni: 42.7 (#87)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Coding | 1415 | 1467 |
| LMArena WebDev | 1357 | — |
| SciCode | 47.3% | — |
| WeirdML | 49.9% | — |
| ALE-Bench | 944.17 | — |

## Agentic & Tool Use

- Grok 4.3: 27.6 (#93)
- MiMo-V2-Omni: —

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |

## Reasoning

- Grok 4.3: 34.9 (#60)
- MiMo-V2-Omni: 28.6 (#86)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Hard Prompts | 1397 | 1445 |
| NYT Connections (extended) | 55.2% | — |
| CritPt | 8% | — |
| Chess Puzzles | 25% | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.13 | — |
| ForecastBench | 60.3 | — |

## Math

- Grok 4.3: 45.8 (#60)
- MiMo-V2-Omni: 36.4 (#112)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Math | 1388 | 1432 |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 11% | — |

## Knowledge

- Grok 4.3: 52.5 (#57)
- MiMo-V2-Omni: 39.9 (#114)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Expert | 1385 | 1449 |
| GPQA Diamond | 88.8% | — |
| SimpleQA Verified | 33.2% | — |

## Multimodal

- Grok 4.3: 31.6 (#96)
- MiMo-V2-Omni: 37.9 (#62)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | 1231 | 1228 |
| Blueprint-Bench 2 | 0% | — |

## Multilingual

- Grok 4.3: 50.7 (#114)
- MiMo-V2-Omni: 52.0 (#97)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | 1385 | 1404 |
| LMArena Chinese | 1423 | 1469 |
| LMArena French | 1412 | 1448 |
| LMArena German | 1395 | 1398 |
| LMArena Japanese | 1379 | 1318 |
| LMArena Korean | 1357 | 1355 |
| LMArena Russian | 1399 | 1412 |
| LMArena Spanish | 1402 | 1432 |

## Instruction Following

- Grok 4.3: 72.3 (#135)
- MiMo-V2-Omni: 75.4 (#62)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | 1366 | 1428 |

## Long Context

- Grok 4.3: 42.5 (#118)
- MiMo-V2-Omni: 44.1 (#72)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | 1393 | 1442 |

## Writing & Preference

- Grok 4.3: 58.6 (#112)
- MiMo-V2-Omni: 61.6 (#83)

| Benchmark | Grok 4.3 | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | 1397 | 1424 |
| LMArena Creative Writing | 1380 | 1393 |
| LMArena Multi-Turn | 1406 | 1446 |
| EQ-Bench 4 | 1075 | — |

## FAQ

### Is Grok 4.3 better than MiMo-V2-Omni?

Grok 4.3 and MiMo-V2-Omni score almost the same on the Noometry Index (43.6 vs 42.9), so choose on price, context window or the category you care about most.

### Which is cheaper, Grok 4.3 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 4.3 lists at $1.25 and $2.50.

### Is Grok 4.3 or MiMo-V2-Omni better for coding?

MiMo-V2-Omni scores higher on coding benchmarks: 42.7 versus 41.3 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 262K.

### How many benchmarks do Grok 4.3 and MiMo-V2-Omni share?

18 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and MiMo-V2-Omni has 18.