# Claude 3 Sonnet vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-sonnet-vs-grok-4-20-multi-agent
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and Grok 4.20 Multi-Agent in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4.20 Multi-Agent leads 36.6 to 10.0.

## Snapshot

| | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 28.8 | 45.5 |
| Rank | 311 | 62 |
| Context | — | 1M |
| Input $/M | — | $1.25 |
| Output $/M | — | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Sonnet: 29.2 (#296)
- Grok 4.20 Multi-Agent: 42.4 (#91)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1223 | 1458 |
| WeirdML | 10.2% | — |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |

## Agentic & Tool Use

- Claude 3 Sonnet: —
- Grok 4.20 Multi-Agent: —

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |

## Reasoning

- Claude 3 Sonnet: 19.7 (#232)
- Grok 4.20 Multi-Agent: 42.4 (#44)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1448 |
| NYT Connections (extended) | — | 89.6% |
| DTBench | 53.6% | — |
| Epoch Capabilities Index | 120.69 | — |
| WinoGrande | 75.1% | — |

## Math

- Claude 3 Sonnet: 10.0 (#305)
- Grok 4.20 Multi-Agent: 36.6 (#106)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1213 | 1441 |
| OTIS Mock AIME 2024-2025 | 2.5% | — |
| MATH Level 5 | 18.2% | — |

## Knowledge

- Claude 3 Sonnet: 21.1 (#271)
- Grok 4.20 Multi-Agent: 39.7 (#116)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1173 | 1445 |
| GPQA Diamond | 40.6% | — |
| MMLU | 75.9% | — |

## Multimodal

- Claude 3 Sonnet: 24.7 (#120)
- Grok 4.20 Multi-Agent: 39.8 (#44)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | 984 | 1259 |

## Multilingual

- Claude 3 Sonnet: 38.0 (#229)
- Grok 4.20 Multi-Agent: 54.6 (#40)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1205 | 1440 |
| LMArena Chinese | 1188 | 1475 |
| LMArena French | 1228 | 1467 |
| LMArena German | 1204 | 1456 |
| LMArena Japanese | 1131 | 1405 |
| LMArena Korean | 1128 | 1416 |
| LMArena Russian | 1227 | 1457 |
| LMArena Spanish | 1204 | 1447 |

## Instruction Following

- Claude 3 Sonnet: 63.1 (#230)
- Grok 4.20 Multi-Agent: 75.0 (#80)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1200 | 1420 |

## Long Context

- Claude 3 Sonnet: 36.7 (#223)
- Grok 4.20 Multi-Agent: 43.7 (#84)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1211 | 1430 |

## Writing & Preference

- Claude 3 Sonnet: 42.3 (#233)
- Grok 4.20 Multi-Agent: 64.1 (#57)

| Benchmark | Claude 3 Sonnet | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1218 | 1450 |
| LMArena Creative Writing | 1186 | 1435 |
| LMArena Multi-Turn | 1227 | 1451 |

## FAQ

### Is Claude 3 Sonnet better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 28.8 on the Noometry Index.

### Is Claude 3 Sonnet or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 42.4 versus 29.2 in the Noometry coding category.

### How many benchmarks do Claude 3 Sonnet and Grok 4.20 Multi-Agent share?

18 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Grok 4.20 Multi-Agent has 20.