# Gemini 1.5 Flash 8B vs Grok 3

> Grok 3 is the stronger model overall, scoring 39.9 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-8b-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 1 category and Grok 3 in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 3 leads 46.2 to 16.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.6% for Gemini 1.5 Flash 8B and 55.6% for Grok 3.

## Snapshot

| | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 29.9 | 39.9 |
| Rank | 301 | 157 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash 8B: 35.5 (#225)
- Grok 3: 41.9 (#115)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Coding | 1218 | 1432 |
| Aider Polyglot | — | 53.3% |
| WeirdML | — | 37.2% |

## Agentic & Tool Use

- Gemini 1.5 Flash 8B: —
- Grok 3: 30.5 (#76)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| BALROG | — | 29.5% |

## Reasoning

- Gemini 1.5 Flash 8B: 20.0 (#244)
- Grok 3: 13.7 (#333)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1434 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 36.1% |
| Kagi LLM Benchmark | — | 61.3% |
| ARC-AGI-1 | — | 5.5% |
| DTBench | 50% | — |
| Epoch Capabilities Index | — | 138.33 |

## Math

- Gemini 1.5 Flash 8B: 14.2 (#302)
- Grok 3: 38.0 (#145)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.6% | 55.6% |
| LMArena Math | 1207 | 1391 |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
| FrontierMath (Feb 2025 set) | — | 3.8% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Gemini 1.5 Flash 8B: 16.0 (#289)
- Grok 3: 46.2 (#82)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| GPQA Diamond | 33% | 75.8% |
| LMArena Expert | 1185 | 1421 |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 5.8% |
| GPQA (HELM) | — | 65% |

## Multimodal

- Gemini 1.5 Flash 8B: 28.2 (#115)
- Grok 3: —

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Vision | 1044 | — |

## Multilingual

- Gemini 1.5 Flash 8B: 38.5 (#229)
- Grok 3: 52.3 (#87)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Non-English | 1215 | 1410 |
| LMArena Chinese | 1231 | 1448 |
| LMArena French | 1234 | 1460 |
| LMArena German | 1206 | 1431 |
| LMArena Japanese | 1150 | 1387 |
| LMArena Korean | 1140 | 1373 |
| LMArena Russian | 1236 | 1416 |
| LMArena Spanish | 1212 | 1417 |

## Instruction Following

- Gemini 1.5 Flash 8B: 62.8 (#236)
- Grok 3: 75.0 (#73)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1409 |
| IFEval | — | 88.4% |

## Long Context

- Gemini 1.5 Flash 8B: 37.0 (#225)
- Grok 3: 38.7 (#192)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1219 | 1439 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- Gemini 1.5 Flash 8B: 42.8 (#232)
- Grok 3: 55.8 (#141)

| Benchmark | Gemini 1.5 Flash 8B | Grok 3 |
|---|---|---|
| LMArena Text | 1226 | 1426 |
| LMArena Creative Writing | 1218 | 1414 |
| LMArena Multi-Turn | 1185 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| WildBench | — | 84.9% |

## FAQ

### Is Gemini 1.5 Flash 8B better than Grok 3?

Grok 3 is the stronger model overall, scoring 39.9 to 29.9 on the Noometry Index.

### Is Gemini 1.5 Flash 8B or Grok 3 better for coding?

Grok 3 scores higher on coding benchmarks: 41.9 versus 35.5 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash 8B and Grok 3 share?

19 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Grok 3 has 40.