# Gemini 1.5 Flash (May 2024) vs Gemini 1.5 Pro (May 2024)

> Gemini 1.5 Flash (May 2024) is the stronger model overall, scoring 33.2 to 32.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-vs-gemini-1-5-pro
- Last updated: 2026-10-10
- Shared benchmarks: 37

## Summary

- They share 37 benchmarks with published results for both. Gemini 1.5 Flash (May 2024) scores higher in 3 categories and Gemini 1.5 Pro (May 2024) in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 1.5 Flash (May 2024) leads 21.7 to 12.3.
- The biggest single-benchmark swing is GPQA Diamond: 47.3% for Gemini 1.5 Flash (May 2024) and 57.2% for Gemini 1.5 Pro (May 2024).

## Snapshot

| | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| Provider | Google | Google |
| Noometry Index | 33.2 | 32.1 |
| Rank | 246 | 261 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash (May 2024): 34.4 (#236)
- Gemini 1.5 Pro (May 2024): 34.2 (#241)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| WeirdML | 24.9% | 22.2% |
| BigCodeBench Instruct | 43.5% | 43.8% |
| LMArena Coding | 1261 | 1294 |
| BigCodeBench Complete | 55.1% | 57.5% |
| HumanEval+ | 75.6% | 79.3% |
| MBPP+ | 67.5% | 74.6% |
| CadEval | — | 34% |

## Agentic & Tool Use

- Gemini 1.5 Flash (May 2024): 26.6 (#102)
- Gemini 1.5 Pro (May 2024): 17.9 (#145)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| BALROG | 14.6% | 21% |
| TheAgentCompany | — | 3.4% |
| Cybench | — | 7.5% |

## Reasoning

- Gemini 1.5 Flash (May 2024): 21.7 (#215)
- Gemini 1.5 Pro (May 2024): 12.3 (#338)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1296 |
| DTBench | 53.8% | 59% |
| Epoch Capabilities Index | 129.36 | 131.73 |
| ForecastBench | 53.9 | 58.4 |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 27.1% |
| BIG-Bench Hard | — | 89.2% |
| PIQA | 87.5% | — |

## Math

- Gemini 1.5 Flash (May 2024): 22.1 (#281)
- Gemini 1.5 Pro (May 2024): 25.8 (#266)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | 23.1% |
| Omni-MATH | 30.4% | 36.4% |
| LMArena Math | 1269 | 1315 |
| MATH Level 5 | 61.9% | 70.4% |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |

## Knowledge

- Gemini 1.5 Flash (May 2024): 26.2 (#260)
- Gemini 1.5 Pro (May 2024): 29.4 (#239)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| GPQA Diamond | 47.3% | 57.2% |
| MMLU-Pro | 67.8% | 73.7% |
| GPQA (HELM) | 43.7% | 53.4% |
| LMArena Expert | 1233 | 1279 |
| MMLU | 77.9% | 86.9% |
| Humanity's Last Exam | — | 4.6% |
| Confabulations | — | 13.5% |
| BoolQ | 85.8% | — |

## Multimodal

- Gemini 1.5 Flash (May 2024): 36.0 (#81)
- Gemini 1.5 Pro (May 2024): 36.8 (#77)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| LMArena Vision | 1141 | 1161 |
| Video-MME | 70.3% | 75% |
| GeoBench | 76% | — |

## Multilingual

- Gemini 1.5 Flash (May 2024): 42.9 (#189)
- Gemini 1.5 Pro (May 2024): 45.3 (#174)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| LMArena Non-English | 1278 | 1312 |
| LMArena Chinese | 1295 | 1331 |
| LMArena French | 1258 | 1302 |
| LMArena German | 1262 | 1286 |
| LMArena Japanese | 1252 | 1292 |
| LMArena Korean | 1221 | 1298 |
| LMArena Russian | 1288 | 1320 |
| LMArena Spanish | 1243 | 1311 |

## Instruction Following

- Gemini 1.5 Flash (May 2024): 66.8 (#205)
- Gemini 1.5 Pro (May 2024): 68.6 (#185)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| IFEval | 83.1% | 83.7% |
| LMArena Instruction Following | 1258 | 1297 |

## Long Context

- Gemini 1.5 Flash (May 2024): 39.0 (#187)
- Gemini 1.5 Pro (May 2024): 39.8 (#169)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| LMArena Longer Query | 1284 | 1308 |

## Writing & Preference

- Gemini 1.5 Flash (May 2024): 48.7 (#196)
- Gemini 1.5 Pro (May 2024): 52.4 (#172)

| Benchmark | Gemini 1.5 Flash (May 2024) | Gemini 1.5 Pro (May 2024) |
|---|---|---|
| LMArena Text | 1287 | 1319 |
| LMArena Creative Writing | 1285 | 1333 |
| WildBench | 79.2% | 81.3% |
| LMArena Multi-Turn | 1253 | 1296 |

## FAQ

### Is Gemini 1.5 Flash (May 2024) better than Gemini 1.5 Pro (May 2024)?

Gemini 1.5 Flash (May 2024) is the stronger model overall, scoring 33.2 to 32.1 on the Noometry Index.

### Is Gemini 1.5 Flash (May 2024) or Gemini 1.5 Pro (May 2024) better for coding?

They score almost the same on coding (34.4 vs 34.2); test both on your own repository before choosing.

### How many benchmarks do Gemini 1.5 Flash (May 2024) and Gemini 1.5 Pro (May 2024) share?

37 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and Gemini 1.5 Pro (May 2024) has 45.