# Gemini 2.5 Flash vs Grok 4.1

> Grok 4.1 is the stronger model overall, scoring 41.5 to 39.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-5-flash-vs-grok-4-1
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Gemini 2.5 Flash scores higher in 4 categories and Grok 4.1 in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 leads 29.5 to 18.1.

## Snapshot

| | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 39.3 | 41.5 |
| Rank | 170 | 134 |
| Context | 1.05M | — |
| Input $/M | $0.30 | — |
| Output $/M | $2.50 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.5 Flash: 35.8 (#220)
- Grok 4.1: 33.7 (#253)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Coding | 1424 | 1445 |
| SWE-bench Verified (bash only) | 28.7% | — |
| Aider Polyglot | 55.1% | — |
| LMArena WebDev | — | 1214 |
| WeirdML | 41.9% | — |
| ALE-Bench | 661.88 | — |

## Agentic & Tool Use

- Gemini 2.5 Flash: 30.8 (#74)
- Grok 4.1: 34.1 (#49)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| Terminal-Bench | 17.1% | — |
| Berkeley Function Calling Leaderboard | 56.2% | — |
| TheAgentCompany | 41.1% | — |
| Cybench | — | 39% |
| BALROG | 33.5% | — |
| Vending-Bench 2 | 548.84 | — |

## Reasoning

- Gemini 2.5 Flash: 18.1 (#286)
- Grok 4.1: 29.5 (#91)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1422 | 1435 |
| ARC-AGI-2 | 2.5% | — |
| SimpleBench | 41.2% | — |
| Kagi LLM Benchmark | 56.8% | — |
| ARC-AGI-1 | 33.3% | — |
| CritPt | 1.1% | — |
| EnigmaEval | 2.7% | — |
| DTBench | 76.5% | — |
| LMCA | 27.5% | — |
| Epoch Capabilities Index | 143.03 | — |
| ForecastBench | 60.6 | — |

## Math

- Gemini 2.5 Flash: 39.9 (#98)
- Grok 4.1: 38.9 (#120)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Math | 1415 | 1422 |
| OTIS Mock AIME 2024-2025 | 73.1% | — |
| Omni-MATH | 38.5% | — |
| FrontierMath (Feb 2025 set) | 4.8% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Gemini 2.5 Flash: 36.4 (#168)
- Grok 4.1: 39.5 (#133)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1426 | 1417 |
| Humanity's Last Exam | 12.1% | — |
| MMLU-Pro | 63.9% | — |
| Confabulations | 16.8% | — |
| Vectara Hallucination Rate | 7.8% | — |
| GPQA (HELM) | 39% | — |

## Multimodal

- Gemini 2.5 Flash: 41.8 (#32)
- Grok 4.1: —

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Vision | 1253 | — |
| GeoBench | 76% | — |
| VPCT | 46.2% | — |
| SpatialViz-Bench | 36.9% | — |

## Multilingual

- Gemini 2.5 Flash: 52.3 (#88)
- Grok 4.1: 53.4 (#68)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1409 | 1425 |
| LMArena Chinese | 1450 | 1465 |
| LMArena French | 1433 | 1448 |
| LMArena German | 1418 | 1446 |
| LMArena Japanese | 1405 | 1397 |
| LMArena Korean | 1385 | 1407 |
| LMArena Russian | 1415 | 1434 |
| LMArena Spanish | 1421 | 1438 |

## Instruction Following

- Gemini 2.5 Flash: 75.7 (#54)
- Grok 4.1: 73.8 (#111)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1405 | 1400 |
| IFEval | 89.8% | — |

## Long Context

- Gemini 2.5 Flash: 47.5 (#17)
- Grok 4.1: 43.2 (#100)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1419 | 1416 |
| Fiction.LiveBench | 77.8% | — |

## Writing & Preference

- Gemini 2.5 Flash: 53.8 (#157)
- Grok 4.1: 62.4 (#75)

| Benchmark | Gemini 2.5 Flash | Grok 4.1 |
|---|---|---|
| LMArena Text | 1417 | 1437 |
| LMArena Creative Writing | 1400 | 1411 |
| LMArena Multi-Turn | 1408 | 1437 |
| Short-Story Creative Writing | 76.5% | — |
| EQ-Bench Creative Writing | 1137 | — |
| WildBench | 81.7% | — |

## FAQ

### Is Gemini 2.5 Flash better than Grok 4.1?

Grok 4.1 is the stronger model overall, scoring 41.5 to 39.3 on the Noometry Index.

### Is Gemini 2.5 Flash or Grok 4.1 better for coding?

Gemini 2.5 Flash scores higher on coding benchmarks: 35.8 versus 33.7 in the Noometry coding category.

### How many benchmarks do Gemini 2.5 Flash and Grok 4.1 share?

17 benchmarks have published results for both models. Gemini 2.5 Flash has 54 scored results on Noometry and Grok 4.1 has 19.