# Claude 3 Sonnet vs Mercury

> Mercury is the stronger model overall, scoring 37.3 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-sonnet-vs-mercury
- Last updated: 2026-10-10
- Shared benchmarks: 8

## Summary

- They share 8 benchmarks with published results for both. Claude 3 Sonnet scores higher in 1 category and Mercury in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in coding, where Mercury leads 38.1 to 29.2.

## Snapshot

| | Claude 3 Sonnet | Mercury |
|---|---|---|
| Provider | Anthropic | Inception |
| Noometry Index | 28.8 | 37.3 |
| Rank | 311 | 192 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Sonnet: 29.2 (#296)
- Mercury: 38.1 (#164)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Coding | 1223 | 1323 |
| WeirdML | 10.2% | — |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |

## Reasoning

- Claude 3 Sonnet: 19.7 (#232)
- Mercury: 16.8 (#288)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1284 |
| Kagi LLM Benchmark | — | 21.6% |
| DTBench | 53.6% | — |
| Epoch Capabilities Index | 120.69 | — |
| WinoGrande | 75.1% | — |

## Math

- Claude 3 Sonnet: 10.0 (#305)
- Mercury: —

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | — |
| LMArena Math | 1213 | — |
| MATH Level 5 | 18.2% | — |

## Knowledge

- Claude 3 Sonnet: 21.1 (#271)
- Mercury: —

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| GPQA Diamond | 40.6% | — |
| LMArena Expert | 1173 | — |
| MMLU | 75.9% | — |

## Multimodal

- Claude 3 Sonnet: 24.7 (#120)
- Mercury: —

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Vision | 984 | — |

## Multilingual

- Claude 3 Sonnet: 38.0 (#229)
- Mercury: 41.7 (#201)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Non-English | 1205 | 1259 |
| LMArena Chinese | 1188 | — |
| LMArena French | 1228 | — |
| LMArena German | 1204 | — |
| LMArena Japanese | 1131 | — |
| LMArena Korean | 1128 | — |
| LMArena Russian | 1227 | — |
| LMArena Spanish | 1204 | — |

## Instruction Following

- Claude 3 Sonnet: 63.1 (#230)
- Mercury: 65.3 (#220)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Instruction Following | 1200 | 1238 |

## Long Context

- Claude 3 Sonnet: 36.7 (#223)
- Mercury: 38.3 (#193)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Longer Query | 1211 | 1264 |

## Writing & Preference

- Claude 3 Sonnet: 42.3 (#233)
- Mercury: 46.2 (#216)

| Benchmark | Claude 3 Sonnet | Mercury |
|---|---|---|
| LMArena Text | 1218 | 1282 |
| LMArena Creative Writing | 1186 | 1186 |
| LMArena Multi-Turn | 1227 | 1283 |

## FAQ

### Is Claude 3 Sonnet better than Mercury?

Mercury is the stronger model overall, scoring 37.3 to 28.8 on the Noometry Index.

### Is Claude 3 Sonnet or Mercury better for coding?

Mercury scores higher on coding benchmarks: 38.1 versus 29.2 in the Noometry coding category.

### How many benchmarks do Claude 3 Sonnet and Mercury share?

8 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Mercury has 9.