# Gemini 1.5 Flash 8B vs Grok 4

> Grok 4 is the stronger model overall, scoring 47.8 to 29.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-grok-4
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and Grok 4 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4 leads 53.7 to 16.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 84% for Grok 4.

## Snapshot

| | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 29.7 | 47.8 |
| Rank | 292 | 49 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash 8B: 34.9 (#221)
- Grok 4: 49.9 (#44)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Coding | 1218 | 1408 |
| Aider Polyglot | — | 79.6% |
| WeirdML | — | 45.7% |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- Grok 4: 32.1 (#62)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| Terminal-Bench | — | 27.2% |
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 21.1% |
| Cybench | — | 43% |
| DeepResearch Bench | — | 47.3% |
| BALROG | — | 43.6% |
| LMArena Search | — | 1142 |
| METR Time Horizons | — | 66.6% |

## Reasoning

- Gemini 1.5 Flash 8B: 19.2 (#242)
- Grok 4: 36.9 (#59)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Hard Prompts | 1210 | 1409 |
| ARC-AGI-2 | — | 16% |
| SimpleBench | — | 60.5% |
| Kagi LLM Benchmark | — | 73.6% |
| ARC-AGI-1 | — | 66.7% |
| Chess Puzzles | — | 28% |
| DTBench | 50% | — |
| Epoch Capabilities Index | — | 146.46 |
| ForecastBench | — | 60.9 |

## Math

- Gemini 1.5 Flash 8B: 13.3 (#296)
- Grok 4: 46.5 (#58)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 84% |
| LMArena Math | 1207 | 1422 |
| Omni-MATH | — | 60.3% |
| FrontierMath (Feb 2025 set) | — | 19.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#285)
- Grok 4: 53.7 (#50)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| GPQA Diamond | 33% | 87% |
| LMArena Expert | 1185 | 1417 |
| MMLU-Pro | — | 85.1% |
| Confabulations | — | 12.4% |
| GPQA (HELM) | — | 72.7% |

## Multimodal

- Gemini 1.5 Flash 8B: 27.6 (#110)
- Grok 4: 33.1 (#89)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Vision | 1044 | 1211 |
| GeoBench | — | 45% |

## Multilingual

- Gemini 1.5 Flash 8B: 38.6 (#224)
- Grok 4: 52.0 (#98)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Non-English | 1215 | 1403 |
| LMArena Chinese | 1231 | 1428 |
| LMArena French | 1233 | 1418 |
| LMArena German | 1206 | 1429 |
| LMArena Japanese | 1150 | 1396 |
| LMArena Korean | 1140 | 1376 |
| LMArena Russian | 1236 | 1409 |
| LMArena Spanish | 1212 | 1419 |

## Instruction Following

- Gemini 1.5 Flash 8B: 63.1 (#231)
- Grok 4: 79.4 (#4)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1387 |
| IFEval | — | 94.9% |

## Long Context

- Gemini 1.5 Flash 8B: 36.9 (#220)
- Grok 4: 63.1 (#4)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Longer Query | 1219 | 1409 |
| Fiction.LiveBench | — | 94.4% |

## Writing & Preference

- Gemini 1.5 Flash 8B: 43.0 (#227)
- Grok 4: 58.7 (#111)

| Benchmark | Gemini 1.5 Flash 8B | Grok 4 |
|---|---|---|
| LMArena Text | 1226 | 1412 |
| LMArena Creative Writing | 1218 | 1397 |
| LMArena Multi-Turn | 1185 | 1416 |
| Short-Story Creative Writing | — | 76.9% |
| WildBench | — | 79.7% |

## FAQ

### Is Gemini 1.5 Flash 8B better than Grok 4?

Grok 4 is the stronger model overall, scoring 47.8 to 29.7 on the Noometry Index.

### Is Gemini 1.5 Flash 8B or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 49.9 versus 34.9 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash 8B and Grok 4 share?

20 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Grok 4 has 48.