# Amazon Nova Pro vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 31.0 on the Noometry Index.

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

## Summary

- They share 18 benchmarks with published results for both. Amazon Nova Pro 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 reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 20.0.
- Amazon Nova Pro is cheaper at $0.80 / $3.20 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 300K.

## Snapshot

| | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 31.0 | 46.2 |
| Rank | 281 | 65 |
| Context | 300K | 1M |
| Input $/M | $0.80 | $1.25 |
| Output $/M | $3.20 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Pro: 35.1 (#229)
- Grok 4.20 Multi-Agent: 43.0 (#92)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1270 | 1457 |
| LiveBench Coding | 38.1% | — |

## Agentic & Tool Use

- Amazon Nova Pro: 16.7 (#147)
- Grok 4.20 Multi-Agent: —

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |
| LMArena Search | — | 1204 |

## Reasoning

- Amazon Nova Pro: 20.0 (#243)
- Grok 4.20 Multi-Agent: 43.9 (#48)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1448 |
| NYT Connections (extended) | — | 89.6% |
| LiveBench Reasoning | 32.6% | — |
| LiveBench Data Analysis | 48.3% | — |
| Epoch Capabilities Index | 123.8 | — |
| LiveBench | 43.5% | — |

## Math

- Amazon Nova Pro: 28.5 (#243)
- Grok 4.20 Multi-Agent: 39.4 (#104)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1252 | 1442 |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |

## Knowledge

- Amazon Nova Pro: 27.4 (#250)
- Grok 4.20 Multi-Agent: 40.4 (#119)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1211 | 1445 |
| Humanity's Last Exam | 4.4% | — |
| MMLU-Pro | 67.3% | — |
| Confabulations | 30.1% | — |
| Vectara Hallucination Rate | 5.1% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |

## Multimodal

- Amazon Nova Pro: 25.0 (#126)
- Grok 4.20 Multi-Agent: 40.5 (#48)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | 980 | 1259 |

## Multilingual

- Amazon Nova Pro: 39.7 (#223)
- Grok 4.20 Multi-Agent: 54.4 (#43)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1234 | 1440 |
| LMArena Chinese | 1244 | 1475 |
| LMArena French | 1271 | 1466 |
| LMArena German | 1243 | 1456 |
| LMArena Japanese | 1200 | 1405 |
| LMArena Korean | 1203 | 1416 |
| LMArena Russian | 1240 | 1457 |
| LMArena Spanish | 1182 | 1447 |

## Instruction Following

- Amazon Nova Pro: 64.9 (#226)
- Grok 4.20 Multi-Agent: 74.8 (#84)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1235 | 1420 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |

## Long Context

- Amazon Nova Pro: 38.1 (#205)
- Grok 4.20 Multi-Agent: 43.7 (#88)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1255 | 1431 |

## Writing & Preference

- Amazon Nova Pro: 43.9 (#226)
- Grok 4.20 Multi-Agent: 64.0 (#59)

| Benchmark | Amazon Nova Pro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1259 | 1450 |
| LMArena Creative Writing | 1212 | 1436 |
| LMArena Multi-Turn | 1246 | 1452 |
| Short-Story Creative Writing | 60.5% | — |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |

## FAQ

### Is Amazon Nova Pro better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 31.0 on the Noometry Index.

### Which is cheaper, Amazon Nova Pro or Grok 4.20 Multi-Agent?

Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Amazon Nova Pro or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 35.1 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 300K.

### How many benchmarks do Amazon Nova Pro and Grok 4.20 Multi-Agent share?

18 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Grok 4.20 Multi-Agent has 20.