# Grok 4.3 vs Hy4 preview

> Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-3-vs-hy4-preview
- Last updated: 2026-10-11
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Grok 4.3 scores higher in 1 category and Hy4 preview in 2 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in coding, where Hy4 preview leads 51.6 to 41.6.
- The biggest single-benchmark swing is ProofBench: 11% for Grok 4.3 and 75% for Hy4 preview.
- Hy4 preview is cheaper at $0.83 / $2.50 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
- Hy4 preview accepts more context: 1.05M tokens versus 1M.
- Hy4 preview has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.3 | Hy4 preview |
|---|---|---|
| Provider | xAI | Tencent |
| Noometry Index | 43.8 | 45.3 |
| Rank | 86 | 73 |
| Context | 1M | 1.05M |
| Input $/M | $1.25 | $0.83 |
| Output $/M | $2.50 | $2.50 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.3: 41.6 (#121)
- Hy4 preview: 51.6 (#38)

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1357 | 1632 |
| SciCode | 47.3% | — |
| WeirdML | 49.9% | — |
| LMArena Coding | 1415 | — |
| ALE-Bench | 944.17 | — |

## Agentic & Tool Use

- Grok 4.3: 27.7 (#99)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |

## Reasoning

- Grok 4.3: 35.9 (#68)
- Hy4 preview: 31.9 (#79)

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | 55.2% | 68.2% |
| CritPt | 8% | — |
| Chess Puzzles | 25% | — |
| LMArena Hard Prompts | 1396 | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.16 | — |
| ForecastBench | 60.3 | — |

## Math

- Grok 4.3: 46.0 (#74)
- Hy4 preview: 55.7 (#42)

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| ProofBench | 11% | 75% |
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| LMArena Math | 1388 | — |

## Knowledge

- Grok 4.3: 52.5 (#62)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| GPQA Diamond | 88.8% | — |
| SimpleQA Verified | 33.2% | — |
| LMArena Expert | 1385 | — |

## Multimodal

- Grok 4.3: 31.6 (#104)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena Vision | 1229 | — |
| Blueprint-Bench 2 | 0% | — |

## Multilingual

- Grok 4.3: 50.5 (#120)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1385 | — |
| LMArena Chinese | 1422 | — |
| LMArena French | 1412 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1379 | — |
| LMArena Korean | 1356 | — |
| LMArena Russian | 1399 | — |
| LMArena Spanish | 1398 | — |

## Instruction Following

- Grok 4.3: 72.1 (#140)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1366 | — |

## Long Context

- Grok 4.3: 42.5 (#123)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena Longer Query | 1393 | — |

## Writing & Preference

- Grok 4.3: 58.5 (#118)
- Hy4 preview: —

| Benchmark | Grok 4.3 | Hy4 preview |
|---|---|---|
| LMArena Text | 1397 | — |
| LMArena Creative Writing | 1380 | — |
| EQ-Bench 4 | 1075 | — |
| LMArena Multi-Turn | 1406 | — |

## FAQ

### Is Grok 4.3 better than Hy4 preview?

Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.

### Which is cheaper, Grok 4.3 or Hy4 preview?

Hy4 preview is cheaper. It lists at $0.83 per million input tokens and $2.50 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

### Is Grok 4.3 or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 41.6 in the Noometry coding category.

### Which has the bigger context window?

Hy4 preview does, with 1.05M tokens against 1M.

### How many benchmarks do Grok 4.3 and Hy4 preview share?

3 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Hy4 preview has 3.