# Gemma 2 9B vs Grok 4.1 Fast

> Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 25.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemma-2-9b-vs-grok-4-1-fast
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Gemma 2 9B scores higher in 0 categories and Grok 4.1 Fast in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 15.3.
- Gemma 2 9B has downloadable open weights; the other is API-only.

## Snapshot

| | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 25.7 | 40.9 |
| Rank | 334 | 131 |
| Context | — | 128K |
| Input $/M | — | $0.20 |
| Output $/M | — | $0.50 |
| Weights | Open | Proprietary |

## Coding

- Gemma 2 9B: 29.0 (#299)
- Grok 4.1 Fast: 33.8 (#236)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1174 | 1411 |
| LMArena WebDev | — | 1241 |
| BigCodeBench Instruct | 34.7% | — |
| LiveBench Coding | 22.5% | — |
| BigCodeBench Complete | 40.6% | — |
| ALE-Bench | — | 394.93 |

## Agentic & Tool Use

- Gemma 2 9B: —
- Grok 4.1 Fast: 36.1 (#35)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |

## Reasoning

- Gemma 2 9B: 15.3 (#306)
- Grok 4.1 Fast: 42.3 (#45)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1172 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| LiveBench Reasoning | 15.2% | — |
| DTBench | — | 87.7% |
| LiveBench Data Analysis | 36.4% | — |
| Epoch Capabilities Index | 119.78 | — |
| ForecastBench | — | 61 |
| LiveBench | 28.7% | — |
| PIQA | 83.7% | — |

## Math

- Gemma 2 9B: 9.3 (#312)
- Grok 4.1 Fast: 30.9 (#201)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Math | 1183 | 1408 |
| MathArena Final-Answer Competitions | — | 60.9% |
| OTIS Mock AIME 2024-2025 | 0.6% | — |
| ProofBench | — | 4% |
| LiveBench Math | 19.8% | — |
| MATH Level 5 | 21% | — |
| GSM8K | 84.9% | — |

## Knowledge

- Gemma 2 9B: 9.7 (#300)
- Grok 4.1 Fast: 32.6 (#203)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Expert | 1147 | 1398 |
| GPQA Diamond | 27.5% | — |
| Vectara Hallucination Rate | — | 17.8% |
| BoolQ | 85.7% | — |
| MMLU | 72.1% | — |

## Multimodal

- Gemma 2 9B: —
- Grok 4.1 Fast: 36.3 (#71)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |

## Multilingual

- Gemma 2 9B: 36.8 (#233)
- Grok 4.1 Fast: 51.1 (#110)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1188 | 1391 |
| LMArena Chinese | 1185 | 1441 |
| LMArena French | 1189 | 1416 |
| LMArena German | 1186 | 1404 |
| LMArena Japanese | 1144 | 1347 |
| LMArena Korean | 1137 | 1361 |
| LMArena Russian | 1200 | 1387 |
| LMArena Spanish | 1200 | 1411 |

## Instruction Following

- Gemma 2 9B: 57.8 (#264)
- Grok 4.1 Fast: 72.8 (#127)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1178 | 1376 |
| LiveBench Instruction Following | 52.6% | — |

## Long Context

- Gemma 2 9B: 36.3 (#228)
- Grok 4.1 Fast: 42.4 (#121)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1197 | 1390 |

## Writing & Preference

- Gemma 2 9B: 32.3 (#276)
- Grok 4.1 Fast: 57.4 (#126)

| Benchmark | Gemma 2 9B | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1207 | 1408 |
| LMArena Creative Writing | 1206 | 1394 |
| EQ-Bench Creative Writing | 841 | 1327 |
| LMArena Multi-Turn | 1193 | 1389 |
| LiveBench Language | 25.5% | — |

## FAQ

### Is Gemma 2 9B better than Grok 4.1 Fast?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 25.7 on the Noometry Index.

### Is Gemma 2 9B or Grok 4.1 Fast better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 33.8 versus 29.0 in the Noometry coding category.

### How many benchmarks do Gemma 2 9B and Grok 4.1 Fast share?

18 benchmarks have published results for both models. Gemma 2 9B has 35 scored results on Noometry and Grok 4.1 Fast has 32.