# Amazon Nova Micro vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 30.4 on the Noometry Index. Amazon Nova Micro costs 26× 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/amazon-nova-micro-vs-grok-4-20-multi-agent
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Amazon Nova Micro 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 reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 17.4.
- Amazon Nova Micro is cheaper at $0.035 / $0.14 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 128K.

## Snapshot

| | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 30.4 | 46.2 |
| Rank | 294 | 65 |
| Context | 128K | 1M |
| Input $/M | $0.035 | $1.25 |
| Output $/M | $0.14 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Micro: 30.5 (#295)
- Grok 4.20 Multi-Agent: 43.0 (#92)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1218 | 1457 |
| LiveBench Coding | 20.2% | — |

## Agentic & Tool Use

- Amazon Nova Micro: 22.1 (#132)
- Grok 4.20 Multi-Agent: —

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| Berkeley Function Calling Leaderboard | 22.3% | — |
| LMArena Search | — | 1204 |

## Reasoning

- Amazon Nova Micro: 17.4 (#294)
- Grok 4.20 Multi-Agent: 43.9 (#48)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1191 | 1448 |
| NYT Connections (extended) | — | 89.6% |
| LiveBench Reasoning | 25.1% | — |
| LiveBench Data Analysis | 34% | — |
| LiveBench | 29.6% | — |

## Math

- Amazon Nova Micro: 26.9 (#254)
- Grok 4.20 Multi-Agent: 39.4 (#104)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1206 | 1442 |
| Omni-MATH | 21.4% | — |
| LiveBench Math | 34.5% | — |

## Knowledge

- Amazon Nova Micro: 29.6 (#237)
- Grok 4.20 Multi-Agent: 40.4 (#119)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1184 | 1445 |
| MMLU-Pro | 51.1% | — |
| Vectara Hallucination Rate | 5.5% | — |
| GPQA (HELM) | 38.3% | — |
| MMLU | 70.8% | — |

## Multimodal

- Amazon Nova Micro: —
- Grok 4.20 Multi-Agent: 40.5 (#48)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |

## Multilingual

- Amazon Nova Micro: 36.5 (#239)
- Grok 4.20 Multi-Agent: 54.4 (#43)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1186 | 1440 |
| LMArena Chinese | 1209 | 1475 |
| LMArena French | 1238 | 1466 |
| LMArena German | 1192 | 1456 |
| LMArena Japanese | 1154 | 1405 |
| LMArena Korean | 1150 | 1416 |
| LMArena Russian | 1185 | 1457 |
| LMArena Spanish | 1225 | 1447 |

## Instruction Following

- Amazon Nova Micro: 56.3 (#272)
- Grok 4.20 Multi-Agent: 74.8 (#84)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1174 | 1420 |
| LiveBench Instruction Following | 48% | — |
| IFEval | 76% | — |

## Long Context

- Amazon Nova Micro: 36.5 (#229)
- Grok 4.20 Multi-Agent: 43.7 (#88)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1205 | 1431 |

## Writing & Preference

- Amazon Nova Micro: 39.5 (#247)
- Grok 4.20 Multi-Agent: 64.0 (#59)

| Benchmark | Amazon Nova Micro | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1208 | 1450 |
| LMArena Creative Writing | 1172 | 1436 |
| LMArena Multi-Turn | 1178 | 1452 |
| WildBench | 74.3% | — |
| LiveBench Language | 15.8% | — |

## FAQ

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

Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 30.4 on the Noometry Index. Amazon Nova Micro costs 26× 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, Amazon Nova Micro or Grok 4.20 Multi-Agent?

Amazon Nova Micro is cheaper. It lists at $0.035 per million input tokens and $0.14 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

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

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 30.5 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 128K.

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

17 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and Grok 4.20 Multi-Agent has 20.