# Gemini 3.8 Flash vs Grok 4.1

> Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 41.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-8-flash-vs-grok-4-1
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and Grok 4.1 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 29.5.

## Snapshot

| | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 61.8 | 41.5 |
| Rank | 11 | 134 |
| Context | 1.05M | — |
| Input $/M | $0.75 | — |
| Output $/M | $3.75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.8 Flash: 59.2 (#15)
- Grok 4.1: 33.7 (#253)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena WebDev | 1584 | 1214 |
| LMArena Coding | 1510 | 1445 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| WeirdML | 84.8% | — |
| ALE-Bench | 1,270 | — |

## Agentic & Tool Use

- Gemini 3.8 Flash: 41.8 (#21)
- Grok 4.1: 34.1 (#49)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| APEX-Agents | 64.3% | — |
| Remote Labor Index | 5.8% | — |
| Cybench | — | 39% |
| GDP.pdf | 23.4% | — |
| Vending-Bench 2 | 5,094 | — |

## Reasoning

- Gemini 3.8 Flash: 76.9 (#5)
- Grok 4.1: 29.5 (#91)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1508 | 1435 |
| ARC-AGI-2 | 89.2% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 18.3% | — |
| Chess Puzzles | 61% | — |
| Mystery Game Puzzles | 47% | — |
| DTBench | 95.7% | — |
| LMCA | 52.9% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 156.71 | — |

## Math

- Gemini 3.8 Flash: 65.3 (#28)
- Grok 4.1: 38.9 (#120)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Math | 1528 | 1422 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | 48% | — |

## Knowledge

- Gemini 3.8 Flash: 74.8 (#2)
- Grok 4.1: 39.5 (#133)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1524 | 1417 |
| GPQA Diamond | 95.4% | — |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |

## Multimodal

- Gemini 3.8 Flash: 40.7 (#45)
- Grok 4.1: —

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Vision | 1314 | — |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |

## Multilingual

- Gemini 3.8 Flash: 58.0 (#5)
- Grok 4.1: 53.4 (#68)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1491 | 1425 |
| LMArena Chinese | 1554 | 1465 |
| LMArena French | 1498 | 1448 |
| LMArena German | 1493 | 1446 |
| LMArena Japanese | 1502 | 1397 |
| LMArena Korean | 1459 | 1407 |
| LMArena Russian | 1515 | 1434 |
| LMArena Spanish | 1485 | 1438 |

## Instruction Following

- Gemini 3.8 Flash: 78.0 (#13)
- Grok 4.1: 73.8 (#111)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1490 | 1400 |

## Long Context

- Gemini 3.8 Flash: 46.3 (#24)
- Grok 4.1: 43.2 (#100)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1508 | 1416 |

## Writing & Preference

- Gemini 3.8 Flash: 72.2 (#15)
- Grok 4.1: 62.4 (#75)

| Benchmark | Gemini 3.8 Flash | Grok 4.1 |
|---|---|---|
| LMArena Text | 1499 | 1437 |
| LMArena Creative Writing | 1492 | 1411 |
| LMArena Multi-Turn | 1501 | 1437 |
| EQ-Bench Creative Writing | 1748 | — |

## FAQ

### Is Gemini 3.8 Flash better than Grok 4.1?

Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 41.5 on the Noometry Index.

### Is Gemini 3.8 Flash or Grok 4.1 better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 33.7 in the Noometry coding category.

### How many benchmarks do Gemini 3.8 Flash and Grok 4.1 share?

18 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Grok 4.1 has 19.