# Gemini 3.5 Flash vs Grok-2 (Dec 2024)

> Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-5-flash-vs-grok-2
- Last updated: 2026-10-11
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 16.9.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 95.6% for Gemini 3.5 Flash and 11.5% for Grok-2 (Dec 2024).

## Snapshot

| | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 54.2 | 33.7 |
| Rank | 32 | 239 |
| Context | 1.05M | — |
| Input $/M | $1.50 | — |
| Output $/M | $9 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.5 Flash: 49.4 (#49)
- Grok-2 (Dec 2024): 33.3 (#258)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 62.6% | 22.2% |
| LMArena Coding | 1492 | 1287 |
| SWE-bench Verified | 79.3% | — |
| DeepSWE | 37.4% | — |
| LMArena WebDev | 1499 | — |
| SciCode | 53.1% | — |
| LiveBench Coding | — | 46.4% |
| ALE-Bench | 911.02 | — |

## Agentic & Tool Use

- Gemini 3.5 Flash: 24.7 (#114)
- Grok-2 (Dec 2024): —

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| APEX-Agents | 27.5% | — |
| GBAEval | 6.7% | — |
| GDP.pdf | 14% | — |
| Vending-Bench 2 | 5,396 | — |

## Reasoning

- Gemini 3.5 Flash: 62.8 (#18)
- Grok-2 (Dec 2024): 16.9 (#299)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| SimpleBench | 76.7% | 22.7% |
| LMArena Hard Prompts | 1488 | 1272 |
| DTBench | 94.7% | 65.2% |
| Epoch Capabilities Index | 154.46 | 130.48 |
| ARC-AGI-2 | 72.1% | — |
| NYT Connections (extended) | 92.6% | — |
| ARC-AGI-1 | 92.5% | — |
| CritPt | 13.1% | — |
| Chess Puzzles | 50% | — |
| EnigmaEval | 25.4% | — |
| EBR-Bench | 4.8% | — |
| LiveBench Reasoning | — | 54.8% |
| Mystery Game Puzzles | 32% | — |
| LiveBench Data Analysis | — | 54.5% |
| LMCA | 47.1% | — |
| Surface Evolver Bench | 58.1% | — |
| ForecastBench | 59 | — |
| LiveBench | — | 54.3% |

## Math

- Gemini 3.5 Flash: 60.7 (#36)
- Grok-2 (Dec 2024): 20.8 (#284)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 95.6% | 11.5% |
| LMArena Math | 1504 | 1283 |
| FrontierMath (Feb 2025 set) | 39% | 0.7% |
| FrontierMath (Tiers 1-3) | 62.8% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 76.3% | — |
| ProofBench | 31% | — |
| LiveBench Math | — | 54.9% |
| MATH Level 5 | — | 63.5% |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- Gemini 3.5 Flash: 66.3 (#11)
- Grok-2 (Dec 2024): 29.8 (#233)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 92.8% | 53.8% |
| LMArena Expert | 1495 | 1254 |
| SimpleQA Verified | 66.2% | — |
| Confabulations | — | 20.1% |

## Multimodal

- Gemini 3.5 Flash: 45.7 (#15)
- Grok-2 (Dec 2024): —

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Vision | 1310 | — |
| Blueprint-Bench 2 | 33.6% | — |
| LMArena Document | 1463 | — |

## Multilingual

- Gemini 3.5 Flash: 57.0 (#13)
- Grok-2 (Dec 2024): 43.1 (#188)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1476 | 1282 |
| LMArena Chinese | 1526 | 1289 |
| LMArena French | 1490 | 1318 |
| LMArena German | 1492 | 1287 |
| LMArena Japanese | 1486 | 1244 |
| LMArena Korean | 1451 | 1237 |
| LMArena Russian | 1493 | 1286 |
| LMArena Spanish | 1480 | 1281 |

## Instruction Following

- Gemini 3.5 Flash: 77.0 (#30)
- Grok-2 (Dec 2024): 66.9 (#202)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1467 | 1270 |
| LiveBench Instruction Following | — | 69.6% |

## Long Context

- Gemini 3.5 Flash: 45.4 (#38)
- Grok-2 (Dec 2024): 38.8 (#190)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1482 | 1276 |

## Writing & Preference

- Gemini 3.5 Flash: 65.5 (#47)
- Grok-2 (Dec 2024): 48.6 (#198)

| Benchmark | Gemini 3.5 Flash | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1482 | 1305 |
| LMArena Creative Writing | 1470 | 1284 |
| LMArena Multi-Turn | 1481 | 1290 |
| Short-Story Creative Writing | — | 63.6% |
| EQ-Bench 4 | 1087 | — |
| LiveBench Language | — | 45.6% |

## FAQ

### Is Gemini 3.5 Flash better than Grok-2 (Dec 2024)?

Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 33.7 on the Noometry Index.

### Is Gemini 3.5 Flash or Grok-2 (Dec 2024) better for coding?

Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 33.3 in the Noometry coding category.

### How many benchmarks do Gemini 3.5 Flash and Grok-2 (Dec 2024) share?

24 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Grok-2 (Dec 2024) has 34.