# Gemini 1.5 Flash (May 2024) vs Grok-2 (Dec 2024)

> Gemini 1.5 Flash (May 2024) and Grok-2 (Dec 2024) score almost the same on the Noometry Index (32.9 vs 33.4), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-vs-grok-2
- Last updated: 2026-10-10
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Gemini 1.5 Flash (May 2024) scores higher in 5 categories and Grok-2 (Dec 2024) in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 1.5 Flash (May 2024) leads 20.8 to 16.4.
- The biggest single-benchmark swing is DTBench: 53.8% for Gemini 1.5 Flash (May 2024) and 65.2% for Grok-2 (Dec 2024).

## Snapshot

| | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 32.9 | 33.4 |
| Rank | 240 | 233 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash (May 2024): 33.9 (#233)
- Grok-2 (Dec 2024): 32.9 (#254)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 24.9% | 22.2% |
| LMArena Coding | 1262 | 1288 |
| BigCodeBench Instruct | 43.5% | — |
| LiveBench Coding | — | 46.4% |
| BigCodeBench Complete | 55.1% | — |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |

## Agentic & Tool Use

- Gemini 1.5 Flash (May 2024): 26.3 (#97)
- Grok-2 (Dec 2024): —

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| BALROG | 14.6% | — |

## Reasoning

- Gemini 1.5 Flash (May 2024): 20.8 (#212)
- Grok-2 (Dec 2024): 16.4 (#294)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1272 |
| DTBench | 53.8% | 65.2% |
| Epoch Capabilities Index | 129.37 | 130.48 |
| SimpleBench | — | 22.7% |
| LiveBench Reasoning | — | 54.8% |
| LiveBench Data Analysis | — | 54.5% |
| ForecastBench | 53.9 | — |
| LiveBench | — | 54.3% |
| PIQA | 87.5% | — |

## Math

- Gemini 1.5 Flash (May 2024): 20.8 (#274)
- Grok-2 (Dec 2024): 19.6 (#278)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | 11.5% |
| LMArena Math | 1269 | 1283 |
| MATH Level 5 | 61.9% | 63.5% |
| FrontierMath (Feb 2025 set) | 0% | 0.7% |
| Omni-MATH | 30.4% | — |
| LiveBench Math | — | 54.9% |
| GSM8K | 82.4% | — |

## Knowledge

- Gemini 1.5 Flash (May 2024): 26.2 (#253)
- Grok-2 (Dec 2024): 29.8 (#225)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 47.3% | 53.8% |
| LMArena Expert | 1233 | 1254 |
| MMLU-Pro | 67.8% | — |
| Confabulations | — | 20.1% |
| GPQA (HELM) | 43.7% | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |

## Multimodal

- Gemini 1.5 Flash (May 2024): 35.3 (#76)
- Grok-2 (Dec 2024): —

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Vision | 1141 | — |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |

## Multilingual

- Gemini 1.5 Flash (May 2024): 43.1 (#184)
- Grok-2 (Dec 2024): 43.3 (#183)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1278 | 1282 |
| LMArena Chinese | 1295 | 1289 |
| LMArena French | 1257 | 1317 |
| LMArena German | 1262 | 1287 |
| LMArena Japanese | 1252 | 1244 |
| LMArena Korean | 1220 | 1237 |
| LMArena Russian | 1288 | 1286 |
| LMArena Spanish | 1242 | 1281 |

## Instruction Following

- Gemini 1.5 Flash (May 2024): 67.0 (#199)
- Grok-2 (Dec 2024): 67.1 (#197)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1258 | 1270 |
| LiveBench Instruction Following | — | 69.6% |
| IFEval | 83.1% | — |

## Long Context

- Gemini 1.5 Flash (May 2024): 39.0 (#182)
- Grok-2 (Dec 2024): 38.7 (#186)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1284 | 1276 |

## Writing & Preference

- Gemini 1.5 Flash (May 2024): 48.9 (#190)
- Grok-2 (Dec 2024): 48.8 (#192)

| Benchmark | Gemini 1.5 Flash (May 2024) | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1287 | 1305 |
| LMArena Creative Writing | 1285 | 1284 |
| LMArena Multi-Turn | 1253 | 1290 |
| Short-Story Creative Writing | — | 63.6% |
| WildBench | 79.2% | — |
| LiveBench Language | — | 45.6% |

## FAQ

### Is Gemini 1.5 Flash (May 2024) better than Grok-2 (Dec 2024)?

Gemini 1.5 Flash (May 2024) and Grok-2 (Dec 2024) score almost the same on the Noometry Index (32.9 vs 33.4), so choose on price, context window or the category you care about most.

### Is Gemini 1.5 Flash (May 2024) or Grok-2 (Dec 2024) better for coding?

Gemini 1.5 Flash (May 2024) scores higher on coding benchmarks: 33.9 versus 32.9 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash (May 2024) and Grok-2 (Dec 2024) share?

24 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and Grok-2 (Dec 2024) has 34.