# Grok 4.3 vs Yi-1.5-34B

> Grok 4.3 is the stronger model overall, scoring 43.6 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-3-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Grok 4.3 scores higher in 8 categories and Yi-1.5-34B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 14.8.
- The biggest single-benchmark swing is GPQA Diamond: 88.8% for Grok 4.3 and 32% for Yi-1.5-34B.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| Provider | xAI | 01.AI |
| Noometry Index | 43.6 | 30.2 |
| Rank | 80 | 286 |
| Context | 1M | — |
| Input $/M | $1.25 | — |
| Output $/M | $2.50 | — |
| Weights | Proprietary | Open |

## Coding

- Grok 4.3: 41.3 (#117)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Coding | 1415 | 1169 |
| LMArena WebDev | 1357 | — |
| SciCode | 47.3% | — |
| WeirdML | 49.9% | — |
| BigCodeBench Instruct | — | 33.9% |
| BigCodeBench Complete | — | 43.8% |
| ALE-Bench | 944.17 | — |

## Agentic & Tool Use

- Grok 4.3: 27.6 (#93)
- Yi-1.5-34B: —

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |

## Reasoning

- Grok 4.3: 34.9 (#60)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1397 | 1160 |
| NYT Connections (extended) | 55.2% | — |
| CritPt | 8% | — |
| Chess Puzzles | 25% | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.13 | — |
| ForecastBench | 60.3 | — |

## Math

- Grok 4.3: 45.8 (#60)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1388 | 1182 |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 11% | — |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Grok 4.3: 52.5 (#57)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | 88.8% | 32% |
| LMArena Expert | 1385 | 1144 |
| SimpleQA Verified | 33.2% | — |

## Multimodal

- Grok 4.3: 31.6 (#96)
- Yi-1.5-34B: —

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 1231 | — |
| Blueprint-Bench 2 | 0% | — |

## Multilingual

- Grok 4.3: 50.7 (#114)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1385 | 1121 |
| LMArena Chinese | 1423 | 1213 |
| LMArena French | 1412 | 1155 |
| LMArena German | 1395 | 1111 |
| LMArena Japanese | 1379 | 1021 |
| LMArena Korean | 1357 | 1005 |
| LMArena Russian | 1399 | 1091 |
| LMArena Spanish | 1402 | 1120 |

## Instruction Following

- Grok 4.3: 72.3 (#135)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1366 | 1139 |

## Long Context

- Grok 4.3: 42.5 (#118)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 1393 | 1144 |

## Writing & Preference

- Grok 4.3: 58.6 (#112)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Grok 4.3 | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1397 | 1173 |
| LMArena Creative Writing | 1380 | 1135 |
| LMArena Multi-Turn | 1406 | 1153 |
| EQ-Bench 4 | 1075 | — |

## FAQ

### Is Grok 4.3 better than Yi-1.5-34B?

Grok 4.3 is the stronger model overall, scoring 43.6 to 30.2 on the Noometry Index.

### Is Grok 4.3 or Yi-1.5-34B better for coding?

Grok 4.3 scores higher on coding benchmarks: 41.3 versus 31.9 in the Noometry coding category.

### How many benchmarks do Grok 4.3 and Yi-1.5-34B share?

18 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Yi-1.5-34B has 21.