# Gemini 1.5 Flash (May 2024) vs Mercury 2.5

> Gemini 1.5 Flash (May 2024) and Mercury 2.5 score almost the same on the Noometry Index (33.2 vs 33.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gemini-1-5-flash-vs-mercury-2-5
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where Mercury 2.5 leads 39.5 to 34.4.

## Snapshot

| | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| Provider | Google | Inception |
| Noometry Index | 33.2 | 33.5 |
| Rank | 246 | 242 |
| Context | — | 260K |
| Input $/M | — | $0.04 |
| Output $/M | — | $0.15 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 1.5 Flash (May 2024): 34.4 (#236)
- Mercury 2.5: 39.5 (#156)

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| SciCode | — | 38.5% |
| WeirdML | 24.9% | — |
| BigCodeBench Instruct | 43.5% | — |
| LMArena Coding | 1261 | — |
| BigCodeBench Complete | 55.1% | — |
| ALE-Bench | — | 301.65 |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |

## Agentic & Tool Use

- Gemini 1.5 Flash (May 2024): 26.6 (#102)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| BALROG | 14.6% | — |

## Reasoning

- Gemini 1.5 Flash (May 2024): 21.7 (#215)
- Mercury 2.5: 22.4 (#193)

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| CritPt | — | 0% |
| LMArena Hard Prompts | 1257 | — |
| DTBench | 53.8% | — |
| Epoch Capabilities Index | 129.36 | — |
| ForecastBench | 53.9 | — |
| PIQA | 87.5% | — |

## Math

- Gemini 1.5 Flash (May 2024): 22.1 (#281)
- Mercury 2.5: 23.3 (#272)

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | — |
| ProofBench | — | 3% |
| Omni-MATH | 30.4% | — |
| LMArena Math | 1269 | — |
| MATH Level 5 | 61.9% | — |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |

## Knowledge

- Gemini 1.5 Flash (May 2024): 26.2 (#260)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| GPQA Diamond | 47.3% | — |
| MMLU-Pro | 67.8% | — |
| GPQA (HELM) | 43.7% | — |
| LMArena Expert | 1233 | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |

## Multimodal

- Gemini 1.5 Flash (May 2024): 36.0 (#81)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| LMArena Vision | 1141 | — |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |

## Multilingual

- Gemini 1.5 Flash (May 2024): 42.9 (#189)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1278 | — |
| LMArena Chinese | 1295 | — |
| LMArena French | 1258 | — |
| LMArena German | 1262 | — |
| LMArena Japanese | 1252 | — |
| LMArena Korean | 1221 | — |
| LMArena Russian | 1288 | — |
| LMArena Spanish | 1243 | — |

## Instruction Following

- Gemini 1.5 Flash (May 2024): 66.8 (#205)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| IFEval | 83.1% | — |
| LMArena Instruction Following | 1258 | — |

## Long Context

- Gemini 1.5 Flash (May 2024): 39.0 (#187)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1284 | — |

## Writing & Preference

- Gemini 1.5 Flash (May 2024): 48.7 (#196)
- Mercury 2.5: —

| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1287 | — |
| LMArena Creative Writing | 1285 | — |
| WildBench | 79.2% | — |
| LMArena Multi-Turn | 1253 | — |

## FAQ

### Is Gemini 1.5 Flash (May 2024) better than Mercury 2.5?

Gemini 1.5 Flash (May 2024) and Mercury 2.5 score almost the same on the Noometry Index (33.2 vs 33.5), so choose on price, context window or the category you care about most.

### Is Gemini 1.5 Flash (May 2024) or Mercury 2.5 better for coding?

Mercury 2.5 scores higher on coding benchmarks: 39.5 versus 34.4 in the Noometry coding category.

### How many benchmarks do Gemini 1.5 Flash (May 2024) and Mercury 2.5 share?

0 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and Mercury 2.5 has 4.