# Claude Sonnet 5 vs Gemini 1.5 Flash 8B

> Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 29.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-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 Sonnet 5 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 Sonnet 5 leads 66.1 to 13.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 94.7% for Claude Sonnet 5 and 4.6% for Gemini 1.5 Flash 8B.

## Snapshot

| | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 54.5 | 29.7 |
| Rank | 26 | 292 |
| Context | 1M | — |
| Input $/M | $2 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 5: 55.5 (#20)
- Gemini 1.5 Flash 8B: 34.9 (#221)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Coding | 1483 | 1218 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1540 | — |
| SciCode | 53.6% | — |
| GSO | 37.3% | — |
| WeirdML | 68.8% | — |
| ALE-Bench | 1,463 | — |

## Agentic & Tool Use

- Claude Sonnet 5: 42.7 (#16)
- Gemini 1.5 Flash 8B: —

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| APEX-Agents | 54.5% | — |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |

## Reasoning

- Claude Sonnet 5: 48.2 (#37)
- Gemini 1.5 Flash 8B: 19.2 (#242)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Hard Prompts | 1461 | 1210 |
| DTBench | 92.5% | 50% |
| SimpleBench | 60.6% | — |
| NYT Connections (extended) | 75.1% | — |
| CritPt | 16.9% | — |
| Chess Puzzles | 35% | — |
| Mystery Game Puzzles | 35% | — |
| LMCA | 50% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 156.34 | — |
| ForecastBench | 61.1 | — |

## Math

- Claude Sonnet 5: 66.1 (#21)
- Gemini 1.5 Flash 8B: 13.3 (#296)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.7% | 4.6% |
| LMArena Math | 1467 | 1207 |
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| ProofBench | 77% | — |

## Knowledge

- Claude Sonnet 5: 55.7 (#42)
- Gemini 1.5 Flash 8B: 16.0 (#285)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| GPQA Diamond | 90.5% | 33% |
| LMArena Expert | 1491 | 1185 |
| SimpleQA Verified | 33.7% | — |

## Multimodal

- Claude Sonnet 5: 42.4 (#26)
- Gemini 1.5 Flash 8B: 27.6 (#110)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Vision | 1275 | 1044 |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |

## Multilingual

- Claude Sonnet 5: 54.0 (#55)
- Gemini 1.5 Flash 8B: 38.6 (#224)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Non-English | 1431 | 1215 |
| LMArena Chinese | 1475 | 1231 |
| LMArena French | 1457 | 1233 |
| LMArena German | 1448 | 1206 |
| LMArena Japanese | 1422 | 1150 |
| LMArena Korean | 1411 | 1140 |
| LMArena Russian | 1452 | 1236 |
| LMArena Spanish | 1436 | 1212 |

## Instruction Following

- Claude Sonnet 5: 76.6 (#39)
- Gemini 1.5 Flash 8B: 63.1 (#231)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Instruction Following | 1453 | 1199 |

## Long Context

- Claude Sonnet 5: 44.8 (#53)
- Gemini 1.5 Flash 8B: 36.9 (#220)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Longer Query | 1464 | 1219 |

## Writing & Preference

- Claude Sonnet 5: 69.4 (#24)
- Gemini 1.5 Flash 8B: 43.0 (#227)

| Benchmark | Claude Sonnet 5 | Gemini 1.5 Flash 8B |
|---|---|---|
| LMArena Text | 1443 | 1226 |
| LMArena Creative Writing | 1416 | 1218 |
| LMArena Multi-Turn | 1454 | 1185 |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |

## FAQ

### Is Claude Sonnet 5 better than Gemini 1.5 Flash 8B?

Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 29.7 on the Noometry Index.

### Is Claude Sonnet 5 or Gemini 1.5 Flash 8B better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 34.9 in the Noometry coding category.

### How many benchmarks do Claude Sonnet 5 and Gemini 1.5 Flash 8B share?

21 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Gemini 1.5 Flash 8B has 21.