# Claude Opus 4.8 vs Gemini 1.5 Flash 8B

> Claude Opus 4.8 is the stronger model overall, scoring 60.7 to 29.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-8-vs-gemini-1-5-flash-8b
- Last updated: 2026-10-12
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Claude Opus 4.8 scores higher in 9 categories and Gemini 1.5 Flash 8B in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 4.8 leads 78.4 to 14.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.3% for Claude Opus 4.8 and 4.6% for Gemini 1.5 Flash 8B.

## Snapshot

| | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 60.7 | 29.9 |
| Rank | 13 | 301 |
| Context | 1M | — |
| Input $/M | $5 | — |
| Output $/M | $25 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.8: 59.9 (#12)
- Gemini 1.5 Flash 8B: 35.5 (#225)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Coding | 1490 | 1218 |
| DeepSWE | 59% | — |
| FrontierCode | 46.5% | — |
| LMArena WebDev | 1556 | — |
| SciCode | 53.5% | — |
| GSO | 47.1% | — |
| WeirdML | 82.9% | — |
| ALE-Bench | 1,564 | — |

## Agentic & Tool Use

- Claude Opus 4.8: 47.6 (#11)
- Gemini 1.5 Flash 8B: —

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| APEX-Agents | 48.9% | — |
| OSWorld 2.0 | 20.6% | — |
| Remote Labor Index | 8.3% | — |
| τ²-bench Banking | 39.7% | — |
| DeepResearch Bench | 50.2% | — |
| PostTrainBench | 33.8% | — |
| GBAEval | 70.9% | — |
| GDP.pdf | 24% | — |
| LMArena Search | 1204 | — |
| Vending-Bench 2 | 5,787 | — |

## Reasoning

- Claude Opus 4.8: 64.7 (#16)
- Gemini 1.5 Flash 8B: 20.0 (#244)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Hard Prompts | 1482 | 1209 |
| DTBench | 94.9% | 50% |
| ARC-AGI-2 | 72.1% | — |
| SimpleBench | 64.8% | — |
| Kagi LLM Benchmark | 88.8% | — |
| NYT Connections (extended) | 91.1% | — |
| ARC-AGI-1 | 92.5% | — |
| CritPt | 20.9% | — |
| Chess Puzzles | 34% | — |
| EnigmaEval | 23.5% | — |
| EBR-Bench | 28.6% | — |
| Mystery Game Puzzles | 36% | — |
| LMCA | 57.5% | — |
| Surface Evolver Bench | 87.5% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 158.21 | — |
| ForecastBench | 59.9 | — |

## Math

- Claude Opus 4.8: 78.4 (#13)
- Gemini 1.5 Flash 8B: 14.2 (#302)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.3% | 4.6% |
| LMArena Math | 1487 | 1207 |
| FrontierMath (Tiers 1-3) | 80% | — |
| FrontierMath Tier 4 | 56.1% | — |
| MathArena Final-Answer Competitions | 91.8% | — |
| ProofBench | 69% | — |
| FrontierMath (Feb 2025 set) | 47.2% | — |
| FrontierMath Tier 4 (v1) | 31.3% | — |

## Knowledge

- Claude Opus 4.8: 61.3 (#29)
- Gemini 1.5 Flash 8B: 16.0 (#289)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| GPQA Diamond | 91% | 33% |
| LMArena Expert | 1502 | 1185 |
| SimpleQA Verified | 53% | — |

## Multimodal

- Claude Opus 4.8: 42.9 (#26)
- Gemini 1.5 Flash 8B: 28.2 (#115)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Vision | 1294 | 1044 |
| Blueprint-Bench 2 | 14.5% | — |
| Furniture Assembly | 42.5% | — |
| LMArena Document | 1475 | — |

## Multilingual

- Claude Opus 4.8: 55.2 (#33)
- Gemini 1.5 Flash 8B: 38.5 (#229)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Non-English | 1450 | 1215 |
| LMArena Chinese | 1507 | 1231 |
| LMArena French | 1481 | 1234 |
| LMArena German | 1472 | 1206 |
| LMArena Japanese | 1440 | 1150 |
| LMArena Korean | 1432 | 1140 |
| LMArena Russian | 1474 | 1236 |
| LMArena Spanish | 1466 | 1212 |

## Instruction Following

- Claude Opus 4.8: 77.4 (#24)
- Gemini 1.5 Flash 8B: 62.8 (#236)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Instruction Following | 1476 | 1199 |

## Long Context

- Claude Opus 4.8: 45.4 (#35)
- Gemini 1.5 Flash 8B: 37.0 (#225)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Longer Query | 1483 | 1219 |

## Writing & Preference

- Claude Opus 4.8: 72.0 (#16)
- Gemini 1.5 Flash 8B: 42.8 (#232)

| Benchmark | Claude Opus 4.8 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Text | 1461 | 1226 |
| LMArena Creative Writing | 1454 | 1218 |
| LMArena Multi-Turn | 1476 | 1185 |
| EQ-Bench Creative Writing | 1840 | — |
| EQ-Bench 4 | 1281 | — |

## FAQ

### Is Claude Opus 4.8 better than Gemini 1.5 Flash 8B?

Claude Opus 4.8 is the stronger model overall, scoring 60.7 to 29.9 on the Noometry Index.

### Is Claude Opus 4.8 or Gemini 1.5 Flash 8B better for coding?

Claude Opus 4.8 scores higher on coding benchmarks: 59.9 versus 35.5 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.8 and Gemini 1.5 Flash 8B share?

21 benchmarks have published results for both models. Claude Opus 4.8 has 65 scored results on Noometry and Gemini 1.5 Flash 8B has 21.