# GPT-4 vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 29.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4-vs-grok-4-20-multi-agent
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GPT-4 scores higher in 0 categories and Grok 4.20 Multi-Agent in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.20 Multi-Agent leads 64.0 to 34.9.
- Grok 4.20 Multi-Agent is cheaper at $1.25 / $2.50 per million input/output tokens, against $30 / $60 for GPT-4.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 8K.

## Snapshot

| | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 29.1 | 46.2 |
| Rank | 316 | 65 |
| Context | 8K | 1M |
| Input $/M | $30 | $1.25 |
| Output $/M | $60 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-4: 31.6 (#283)
- Grok 4.20 Multi-Agent: 43.0 (#92)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1254 | 1457 |
| WeirdML | 12.4% | — |
| BigCodeBench Instruct | 46% | — |
| BigCodeBench Complete | 57.2% | — |
| HumanEval+ | 79.3% | — |

## Agentic & Tool Use

- GPT-4: —
- Grok 4.20 Multi-Agent: —

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |
| METR Time Horizons | 36.1% | — |

## Reasoning

- GPT-4: 17.8 (#289)
- Grok 4.20 Multi-Agent: 43.9 (#48)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1241 | 1448 |
| NYT Connections (extended) | — | 89.6% |
| Chess Puzzles | 4% | — |
| Mystery Game Puzzles | 12% | — |
| DTBench | 62.7% | — |
| LMCA | 17.1% | — |
| BIG-Bench Hard | 75.1% | — |
| Epoch Capabilities Index | 125.89 | — |
| ForecastBench | 57.8 | — |
| HellaSwag | 95.3% | — |
| WinoGrande | 87.5% | — |

## Math

- GPT-4: 10.8 (#309)
- Grok 4.20 Multi-Agent: 39.4 (#104)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1269 | 1442 |
| OTIS Mock AIME 2024-2025 | 1.1% | — |
| MATH Level 5 | 23% | — |
| GSM8K | 92% | — |

## Knowledge

- GPT-4: 18.4 (#282)
- Grok 4.20 Multi-Agent: 40.4 (#119)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1211 | 1445 |
| GPQA Diamond | 35.7% | — |
| MMLU | 86.4% | — |
| TriviaQA | 84.8% | — |

## Multimodal

- GPT-4: —
- Grok 4.20 Multi-Agent: 40.5 (#48)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |

## Multilingual

- GPT-4: 40.6 (#215)
- Grok 4.20 Multi-Agent: 54.4 (#43)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1246 | 1440 |
| LMArena Chinese | 1242 | 1475 |
| LMArena French | 1283 | 1466 |
| LMArena German | 1251 | 1456 |
| LMArena Japanese | 1209 | 1405 |
| LMArena Korean | 1184 | 1416 |
| LMArena Russian | 1251 | 1457 |
| LMArena Spanish | 1261 | 1447 |

## Instruction Following

- GPT-4: 65.3 (#222)
- Grok 4.20 Multi-Agent: 74.8 (#84)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1241 | 1420 |

## Long Context

- GPT-4: 37.7 (#212)
- Grok 4.20 Multi-Agent: 43.7 (#88)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1244 | 1431 |

## Writing & Preference

- GPT-4: 34.9 (#268)
- Grok 4.20 Multi-Agent: 64.0 (#59)

| Benchmark | GPT-4 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1263 | 1450 |
| LMArena Creative Writing | 1244 | 1436 |
| LMArena Multi-Turn | 1257 | 1452 |
| EQ-Bench Creative Writing | 752 | — |

## FAQ

### Is GPT-4 better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 29.1 on the Noometry Index.

### Which is cheaper, GPT-4 or Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; GPT-4 lists at $30 and $60.

### Is GPT-4 or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 31.6 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 8K.

### How many benchmarks do GPT-4 and Grok 4.20 Multi-Agent share?

17 benchmarks have published results for both models. GPT-4 has 38 scored results on Noometry and Grok 4.20 Multi-Agent has 20.