# Claude 3 Sonnet vs Yi-1.5-34B

> Yi-1.5-34B is the stronger model overall, scoring 30.2 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-sonnet-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Claude 3 Sonnet scores higher in 5 categories and Yi-1.5-34B in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Yi-1.5-34B leads 25.3 to 10.0.
- The biggest single-benchmark swing is BigCodeBench Complete: 53.8% for Claude 3 Sonnet and 43.8% for Yi-1.5-34B.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| Provider | Anthropic | 01.AI |
| Noometry Index | 28.8 | 30.2 |
| Rank | 311 | 286 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Claude 3 Sonnet: 29.2 (#296)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| BigCodeBench Instruct | 42.7% | 33.9% |
| LMArena Coding | 1223 | 1169 |
| BigCodeBench Complete | 53.8% | 43.8% |
| WeirdML | 10.2% | — |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |

## Reasoning

- Claude 3 Sonnet: 19.7 (#232)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1160 |
| DTBench | 53.6% | — |
| Epoch Capabilities Index | 120.69 | — |
| WinoGrande | 75.1% | — |

## Math

- Claude 3 Sonnet: 10.0 (#305)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1213 | 1182 |
| MATH Level 5 | 18.2% | 25.5% |
| OTIS Mock AIME 2024-2025 | 2.5% | — |

## Knowledge

- Claude 3 Sonnet: 21.1 (#271)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | 40.6% | 32% |
| LMArena Expert | 1173 | 1144 |
| MMLU | 75.9% | — |

## Multimodal

- Claude 3 Sonnet: 24.7 (#120)
- Yi-1.5-34B: —

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 984 | — |

## Multilingual

- Claude 3 Sonnet: 38.0 (#229)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1205 | 1121 |
| LMArena Chinese | 1188 | 1213 |
| LMArena French | 1228 | 1155 |
| LMArena German | 1204 | 1111 |
| LMArena Japanese | 1131 | 1021 |
| LMArena Korean | 1128 | 1005 |
| LMArena Russian | 1227 | 1091 |
| LMArena Spanish | 1204 | 1120 |

## Instruction Following

- Claude 3 Sonnet: 63.1 (#230)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1200 | 1139 |

## Long Context

- Claude 3 Sonnet: 36.7 (#223)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 1211 | 1144 |

## Writing & Preference

- Claude 3 Sonnet: 42.3 (#233)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Claude 3 Sonnet | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1218 | 1173 |
| LMArena Creative Writing | 1186 | 1135 |
| LMArena Multi-Turn | 1227 | 1153 |

## FAQ

### Is Claude 3 Sonnet better than Yi-1.5-34B?

Yi-1.5-34B is the stronger model overall, scoring 30.2 to 28.8 on the Noometry Index.

### Is Claude 3 Sonnet or Yi-1.5-34B better for coding?

Yi-1.5-34B scores higher on coding benchmarks: 31.9 versus 29.2 in the Noometry coding category.

### How many benchmarks do Claude 3 Sonnet and Yi-1.5-34B share?

21 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Yi-1.5-34B has 21.