# Claude Sonnet 4.5 vs Gemini 3 Pro

> Gemini 3 Pro is the stronger model overall, scoring 54.7 to 44.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-4-5-vs-gemini-3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 62

## Summary

- They share 62 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 2 categories and Gemini 3 Pro in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Pro leads 52.5 to 26.9.
- The biggest single-benchmark swing is NYT Connections (extended): 37.3% for Claude Sonnet 4.5 and 94.4% for Gemini 3 Pro.

## Snapshot

| | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| Provider | Anthropic | Google |
| Noometry Index | 44.0 | 54.7 |
| Rank | 76 | 23 |
| Context | 1M | — |
| Input $/M | $3 | — |
| Output $/M | $15 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 4.5: 47.8 (#54)
- Gemini 3 Pro: 52.1 (#33)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| SWE-bench Verified | 71.3% | 72.9% |
| SWE-bench Verified (bash only) | 71.4% | 74.2% |
| LMArena WebDev | 1393 | 1439 |
| SWE-bench Multilingual | 67% | 68.7% |
| GSO | 14.7% | 18.6% |
| WeirdML | 47.7% | 69.9% |
| LMArena Coding | 1489 | 1482 |
| ALE-Bench | 796.15 | 1,177 |
| AlgoTune | 1.52 | 1.83 |
| SciCode | 44.7% | — |

## Agentic & Tool Use

- Claude Sonnet 4.5: 38.1 (#30)
- Gemini 3 Pro: 40.5 (#21)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| Terminal-Bench | 46.5% | 69.4% |
| Berkeley Function Calling Leaderboard | 73.2% | 72.5% |
| GDPval | 42.5% | 40.3% |
| Remote Labor Index | 2.1% | 1.3% |
| τ²-bench Airline | 72% | 80.5% |
| τ²-bench Banking | 25.3% | 18% |
| τ²-bench Retail | 72.4% | 75.9% |
| τ²-bench Telecom | 84.9% | 91% |
| DeepResearch Bench | 52.6% | 46.3% |
| LMArena Search | 1159 | 1207 |
| METR Time Horizons | 67.4% | 71% |
| Vending-Bench 2 | 3,839 | 5,478 |
| Cybench | 60% | — |
| OSWorld | 62.9% | — |
| BALROG | — | 58.1% |

## Reasoning

- Claude Sonnet 4.5: 26.9 (#113)
- Gemini 3 Pro: 52.5 (#28)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| ARC-AGI-2 | 13.6% | 31.1% |
| SimpleBench | 54.3% | 76.4% |
| Kagi LLM Benchmark | 57.9% | 80.1% |
| NYT Connections (extended) | 37.3% | 94.4% |
| ARC-AGI-1 | 63.7% | 75% |
| CritPt | 1.1% | 6.9% |
| Chess Puzzles | 12% | 31% |
| EnigmaEval | 6% | 18.2% |
| LMArena Hard Prompts | 1462 | 1481 |
| Epoch Capabilities Index | 146.84 | 152.96 |
| ForecastBench | 61.9 | 61.2 |
| EBR-Bench | 2.4% | — |
| Mystery Game Puzzles | 17% | — |
| DTBench | 83.2% | — |
| LMCA | 38.8% | — |

## Math

- Claude Sonnet 4.5: 31.9 (#190)
- Gemini 3 Pro: 48.8 (#50)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 77.8% | 91.4% |
| ProofBench | 19% | 20% |
| Omni-MATH | 55.3% | 55.5% |
| LMArena Math | 1448 | 1475 |
| FrontierMath (Feb 2025 set) | 15.2% | 37.6% |
| FrontierMath Tier 4 (v1) | 4.2% | 18.8% |
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| MathArena Final-Answer Competitions | — | 67% |
| MATH Level 5 | 97.7% | — |

## Knowledge

- Claude Sonnet 4.5: 48.4 (#70)
- Gemini 3 Pro: 64.3 (#15)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| GPQA Diamond | 82.3% | 92.6% |
| Humanity's Last Exam | 13.7% | 37.5% |
| MMLU-Pro | 86.9% | 90.3% |
| Vectara Hallucination Rate | 12% | 13.6% |
| GPQA (HELM) | 68.6% | 80.3% |
| LMArena Expert | 1483 | 1475 |
| SimpleQA Verified | 30.7% | — |

## Multimodal

- Claude Sonnet 4.5: 34.1 (#84)
- Gemini 3 Pro: 56.9 (#1)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| VPCT | 39.8% | 91% |
| LMArena Document | 1450 | 1434 |
| LMArena Vision | — | 1305 |
| GeoBench | — | 84% |

## Multilingual

- Claude Sonnet 4.5: 53.6 (#65)
- Gemini 3 Pro: 57.1 (#14)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| LMArena Non-English | 1425 | 1474 |
| LMArena Chinese | 1459 | 1522 |
| LMArena French | 1459 | 1492 |
| LMArena German | 1427 | 1517 |
| LMArena Japanese | 1390 | 1513 |
| LMArena Korean | 1403 | 1449 |
| LMArena Russian | 1436 | 1493 |
| LMArena Spanish | 1457 | 1468 |

## Instruction Following

- Claude Sonnet 4.5: 75.2 (#74)
- Gemini 3 Pro: 76.4 (#42)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| IFEval | 85% | 87.7% |
| LMArena Instruction Following | 1459 | 1458 |

## Long Context

- Claude Sonnet 4.5: 45.2 (#45)
- Gemini 3 Pro: 44.0 (#75)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| LMArena Longer Query | 1476 | 1472 |
| CL-bench | — | 15.8% |

## Writing & Preference

- Claude Sonnet 4.5: 66.7 (#33)
- Gemini 3 Pro: 66.6 (#34)

| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro |
|---|---|---|
| LMArena Text | 1439 | 1479 |
| LMArena Creative Writing | 1442 | 1482 |
| EQ-Bench Creative Writing | 1678 | 1525 |
| WildBench | 85.4% | 85.9% |
| LMArena Multi-Turn | 1465 | 1484 |

## FAQ

### Is Claude Sonnet 4.5 better than Gemini 3 Pro?

Gemini 3 Pro is the stronger model overall, scoring 54.7 to 44.0 on the Noometry Index.

### Is Claude Sonnet 4.5 or Gemini 3 Pro better for coding?

Gemini 3 Pro scores higher on coding benchmarks: 52.1 versus 47.8 in the Noometry coding category.

### How many benchmarks do Claude Sonnet 4.5 and Gemini 3 Pro share?

62 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Gemini 3 Pro has 67.