# Gemma 3 27B vs Grok 4 Fast

> Grok 4 Fast is the stronger model overall, scoring 39.4 to 30.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemma-3-27b-vs-grok-4-fast
- Last updated: 2026-10-12
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Gemma 3 27B scores higher in 0 categories and Grok 4 Fast in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 27.6.
- The biggest single-benchmark swing is Fiction.LiveBench: 33.3% for Gemma 3 27B and 94.4% for Grok 4 Fast.
- Gemma 3 27B has downloadable open weights; the other is API-only.

## Snapshot

| | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 30.8 | 39.4 |
| Rank | 284 | 167 |
| Context | 131K | — |
| Input $/M | $0.08 | — |
| Output $/M | $0.16 | — |
| Weights | Open | Proprietary |

## Coding

- Gemma 3 27B: 22.5 (#334)
- Grok 4 Fast: 32.5 (#271)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Coding | 1322 | 1429 |
| Aider Polyglot | 4.9% | — |
| LMArena WebDev | — | 1159 |
| SciCode | 21.2% | — |
| WeirdML | — | 42.9% |
| LiveBench Coding | 39.9% | — |

## Agentic & Tool Use

- Gemma 3 27B: 25.1 (#110)
- Grok 4 Fast: 29.5 (#86)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | 29.5% | — |
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |

## Reasoning

- Gemma 3 27B: 16.7 (#301)
- Grok 4 Fast: 22.2 (#201)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| Kagi LLM Benchmark | 40.4% | 66.1% |
| LMArena Hard Prompts | 1340 | 1412 |
| DTBench | 52.5% | 82.7% |
| Epoch Capabilities Index | 130.04 | 144.2 |
| ARC-AGI-2 | — | 5.3% |
| ARC-AGI-1 | — | 48.5% |
| CritPt | 0% | — |
| Chess Puzzles | 0% | — |
| LiveBench Reasoning | 43.8% | — |
| LiveBench Data Analysis | 51.5% | — |
| LMCA | 12.3% | — |
| ForecastBench | — | 60.5 |
| LiveBench | 50% | — |

## Math

- Gemma 3 27B: 25.9 (#265)
- Grok 4 Fast: 38.9 (#123)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1312 | 1419 |
| OTIS Mock AIME 2024-2025 | 22.5% | — |
| LiveBench Math | 55.4% | — |
| MATH Level 5 | 74% | — |

## Knowledge

- Gemma 3 27B: 25.5 (#261)
- Grok 4 Fast: 32.0 (#214)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| Vectara Hallucination Rate | 7.4% | 19.7% |
| LMArena Expert | 1304 | 1411 |
| GPQA Diamond | 47.7% | — |
| Confabulations | 40.3% | — |

## Multimodal

- Gemma 3 27B: 32.6 (#100)
- Grok 4 Fast: —

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Vision | 1164 | — |
| GeoBench | 52% | — |

## Multilingual

- Gemma 3 27B: 46.9 (#155)
- Grok 4 Fast: 51.3 (#111)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1334 | 1396 |
| LMArena Chinese | 1346 | 1457 |
| LMArena French | 1368 | 1431 |
| LMArena German | 1362 | 1383 |
| LMArena Japanese | 1287 | 1352 |
| LMArena Korean | 1308 | 1357 |
| LMArena Russian | 1349 | 1389 |
| LMArena Spanish | 1349 | 1415 |

## Instruction Following

- Gemma 3 27B: 70.6 (#160)
- Grok 4 Fast: 73.2 (#121)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1321 | 1387 |
| LiveBench Instruction Following | 74.9% | — |

## Long Context

- Gemma 3 27B: 27.6 (#293)
- Grok 4 Fast: 63.2 (#3)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| Fiction.LiveBench | 33.3% | 94.4% |
| LMArena Longer Query | 1333 | 1415 |

## Writing & Preference

- Gemma 3 27B: 52.5 (#168)
- Grok 4 Fast: 60.0 (#102)

| Benchmark | Gemma 3 27B | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1358 | 1407 |
| LMArena Creative Writing | 1346 | 1387 |
| LMArena Multi-Turn | 1345 | 1414 |
| Short-Story Creative Writing | 79.9% | — |
| EQ-Bench Creative Writing | 1266 | — |
| LiveBench Language | 34.6% | — |

## FAQ

### Is Gemma 3 27B better than Grok 4 Fast?

Grok 4 Fast is the stronger model overall, scoring 39.4 to 30.8 on the Noometry Index.

### Is Gemma 3 27B or Grok 4 Fast better for coding?

Grok 4 Fast scores higher on coding benchmarks: 32.5 versus 22.5 in the Noometry coding category.

### How many benchmarks do Gemma 3 27B and Grok 4 Fast share?

22 benchmarks have published results for both models. Gemma 3 27B has 43 scored results on Noometry and Grok 4 Fast has 30.