# Grok 4.20 Multi-Agent vs Hy3

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 44.2 on the Noometry Index. Hy3 costs 6.8× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-4-20-multi-agent-vs-hy3
- Last updated: 2026-10-11
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 3 categories and Hy3 in 5 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 26.1.
- The biggest single-benchmark swing is NYT Connections (extended): 89.6% for Grok 4.20 Multi-Agent and 41.2% for Hy3.
- Hy3 is cheaper at $0.13 / $0.53 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 262K.
- Hy3 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| Provider | xAI | Tencent |
| Noometry Index | 46.2 | 44.2 |
| Rank | 65 | 79 |
| Context | 1M | 262K |
| Input $/M | $1.25 | $0.13 |
| Output $/M | $2.50 | $0.53 |
| Weights | Proprietary | Open |

## Coding

- Grok 4.20 Multi-Agent: 43.0 (#92)
- Hy3: 46.8 (#63)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Coding | 1457 | 1464 |
| LMArena WebDev | — | 1508 |

## Agentic & Tool Use

- Grok 4.20 Multi-Agent: —
- Hy3: —

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Search | 1204 | — |

## Reasoning

- Grok 4.20 Multi-Agent: 43.9 (#48)
- Hy3: 26.1 (#136)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| NYT Connections (extended) | 89.6% | 41.2% |
| LMArena Hard Prompts | 1448 | 1447 |

## Math

- Grok 4.20 Multi-Agent: 39.4 (#104)
- Hy3: 40.1 (#93)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Math | 1442 | 1475 |

## Knowledge

- Grok 4.20 Multi-Agent: 40.4 (#119)
- Hy3: 40.8 (#114)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Expert | 1445 | 1460 |

## Multimodal

- Grok 4.20 Multi-Agent: 40.5 (#48)
- Hy3: —

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Vision | 1259 | — |

## Multilingual

- Grok 4.20 Multi-Agent: 54.4 (#43)
- Hy3: 53.5 (#65)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Non-English | 1440 | 1426 |
| LMArena Chinese | 1475 | 1493 |
| LMArena French | 1466 | 1461 |
| LMArena German | 1456 | 1439 |
| LMArena Japanese | 1405 | 1392 |
| LMArena Korean | 1416 | 1395 |
| LMArena Russian | 1457 | 1432 |
| LMArena Spanish | 1447 | 1456 |

## Instruction Following

- Grok 4.20 Multi-Agent: 74.8 (#84)
- Hy3: 75.1 (#70)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1426 |

## Long Context

- Grok 4.20 Multi-Agent: 43.7 (#88)
- Hy3: 44.1 (#75)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Longer Query | 1431 | 1442 |

## Writing & Preference

- Grok 4.20 Multi-Agent: 64.0 (#59)
- Hy3: 62.2 (#81)

| Benchmark | Grok 4.20 Multi-Agent | Hy3 |
|---|---|---|
| LMArena Text | 1450 | 1439 |
| LMArena Creative Writing | 1436 | 1402 |
| LMArena Multi-Turn | 1452 | 1436 |

## FAQ

### Is Grok 4.20 Multi-Agent better than Hy3?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 44.2 on the Noometry Index. Hy3 costs 6.8× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

### Which is cheaper, Grok 4.20 Multi-Agent or Hy3?

Hy3 is cheaper. It lists at $0.13 per million input tokens and $0.53 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Grok 4.20 Multi-Agent or Hy3 better for coding?

Hy3 scores higher on coding benchmarks: 46.8 versus 43.0 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 262K.

### How many benchmarks do Grok 4.20 Multi-Agent and Hy3 share?

18 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Hy3 has 19.