# Grok 4.1 vs Molmo 2 8b

> Grok 4.1 is the stronger model overall, scoring 41.5 to 39.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-1-vs-molmo-2-8b
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. Grok 4.1 scores higher in 4 categories and Molmo 2 8b in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.1 leads 62.4 to 49.4.
- Molmo 2 8b has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| Provider | xAI | Allen Institute for AI (Ai2) |
| Noometry Index | 41.5 | 39.1 |
| Rank | 134 | 174 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Grok 4.1: 33.7 (#253)
- Molmo 2 8b: —

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena WebDev | 1214 | — |
| LMArena Coding | 1445 | — |

## Agentic & Tool Use

- Grok 4.1: 34.1 (#49)
- Molmo 2 8b: —

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| Cybench | 39% | — |

## Reasoning

- Grok 4.1: 29.5 (#91)
- Molmo 2 8b: 25.6 (#146)

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1287 |

## Math

- Grok 4.1: 38.9 (#120)
- Molmo 2 8b: —

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Math | 1422 | — |

## Knowledge

- Grok 4.1: 39.5 (#133)
- Molmo 2 8b: —

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Expert | 1417 | — |

## Multimodal

- Grok 4.1: —
- Molmo 2 8b: 30.2 (#112)

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Vision | — | 1081 |

## Multilingual

- Grok 4.1: 53.4 (#68)
- Molmo 2 8b: 42.7 (#190)

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1425 | 1276 |
| LMArena Chinese | 1465 | — |
| LMArena French | 1448 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1397 | — |
| LMArena Korean | 1407 | — |
| LMArena Russian | 1434 | — |
| LMArena Spanish | 1438 | — |

## Instruction Following

- Grok 4.1: 73.8 (#111)
- Molmo 2 8b: 67.0 (#201)

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1400 | 1270 |

## Long Context

- Grok 4.1: 43.2 (#100)
- Molmo 2 8b: —

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1416 | — |

## Writing & Preference

- Grok 4.1: 62.4 (#75)
- Molmo 2 8b: 49.4 (#191)

| Benchmark | Grok 4.1 | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1437 | 1288 |
| LMArena Creative Writing | 1411 | — |
| LMArena Multi-Turn | 1437 | — |

## FAQ

### Is Grok 4.1 better than Molmo 2 8b?

Grok 4.1 is the stronger model overall, scoring 41.5 to 39.1 on the Noometry Index.

### How many benchmarks do Grok 4.1 and Molmo 2 8b share?

4 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Molmo 2 8b has 5.