# Claude 3 Opus vs Gemini 1.5 Flash 8B

> Claude 3 Opus and Gemini 1.5 Flash 8B score almost the same on the Noometry Index (29.3 vs 29.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-gemini-1-5-flash-8b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Claude 3 Opus scores higher in 6 categories and Gemini 1.5 Flash 8B in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude 3 Opus leads 24.5 to 16.0.
- The biggest single-benchmark swing is GPQA Diamond: 47.2% for Claude 3 Opus and 33% for Gemini 1.5 Flash 8B.

## Snapshot

| | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 29.3 | 29.7 |
| Rank | 300 | 292 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Opus: 32.4 (#261)
- Gemini 1.5 Flash 8B: 34.9 (#221)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Coding | 1264 | 1218 |
| WeirdML | 19.2% | — |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.3 (#110)
- Gemini 1.5 Flash 8B: —

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |

## Reasoning

- Claude 3 Opus: 14.2 (#318)
- Gemini 1.5 Flash 8B: 19.2 (#242)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1210 |
| DTBench | 61.6% | 50% |
| SimpleBench | 23.5% | — |
| Chess Puzzles | 5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | 17% | — |
| Epoch Capabilities Index | 126.91 | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 13.9 (#293)
- Gemini 1.5 Flash 8B: 13.3 (#296)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 4.6% |
| LMArena Math | 1273 | 1207 |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |

## Knowledge

- Claude 3 Opus: 24.5 (#262)
- Gemini 1.5 Flash 8B: 16.0 (#285)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| GPQA Diamond | 47.2% | 33% |
| LMArena Expert | 1223 | 1185 |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 26.6 (#112)
- Gemini 1.5 Flash 8B: 27.6 (#110)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Vision | 1023 | 1044 |

## Multilingual

- Claude 3 Opus: 41.6 (#202)
- Gemini 1.5 Flash 8B: 38.6 (#224)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Non-English | 1258 | 1215 |
| LMArena Chinese | 1248 | 1231 |
| LMArena French | 1274 | 1233 |
| LMArena German | 1258 | 1206 |
| LMArena Japanese | 1204 | 1150 |
| LMArena Korean | 1187 | 1140 |
| LMArena Russian | 1280 | 1236 |
| LMArena Spanish | 1246 | 1212 |

## Instruction Following

- Claude 3 Opus: 64.3 (#223)
- Gemini 1.5 Flash 8B: 63.1 (#231)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Instruction Following | 1248 | 1199 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#197)
- Gemini 1.5 Flash 8B: 36.9 (#220)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Longer Query | 1259 | 1219 |

## Writing & Preference

- Claude 3 Opus: 47.4 (#208)
- Gemini 1.5 Flash 8B: 43.0 (#227)

| Benchmark | Claude 3 Opus | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Text | 1262 | 1226 |
| LMArena Creative Writing | 1235 | 1218 |
| LMArena Multi-Turn | 1275 | 1185 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Gemini 1.5 Flash 8B?

Claude 3 Opus and Gemini 1.5 Flash 8B score almost the same on the Noometry Index (29.3 vs 29.7), so choose on price, context window or the category you care about most.

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

Gemini 1.5 Flash 8B scores higher on coding benchmarks: 34.9 versus 32.4 in the Noometry coding category.

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

21 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Gemini 1.5 Flash 8B has 21.