# Amazon Nova Micro vs Grok 4.1 Fast

> Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.4 on the Noometry Index. Amazon Nova Micro costs 4.5× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/amazon-nova-micro-vs-grok-4-1-fast
- Last updated: 2026-10-11
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Amazon Nova Micro scores higher in 0 categories and Grok 4.1 Fast in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 17.4.
- The biggest single-benchmark swing is Berkeley Function Calling Leaderboard: 22.3% for Amazon Nova Micro and 69.6% for Grok 4.1 Fast.
- Amazon Nova Micro is cheaper at $0.035 / $0.14 per million input/output tokens, against $0.20 / $0.50 for Grok 4.1 Fast.

## Snapshot

| | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 30.4 | 41.4 |
| Rank | 294 | 136 |
| Context | 128K | 128K |
| Input $/M | $0.035 | $0.20 |
| Output $/M | $0.14 | $0.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Micro: 30.5 (#295)
- Grok 4.1 Fast: 34.1 (#245)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1218 | 1411 |
| LMArena WebDev | — | 1242 |
| LiveBench Coding | 20.2% | — |
| ALE-Bench | — | 394.93 |

## Agentic & Tool Use

- Amazon Nova Micro: 22.1 (#132)
- Grok 4.1 Fast: 36.3 (#39)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | 22.3% | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |

## Reasoning

- Amazon Nova Micro: 17.4 (#294)
- Grok 4.1 Fast: 43.4 (#49)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1191 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| LiveBench Reasoning | 25.1% | — |
| DTBench | — | 87.7% |
| LiveBench Data Analysis | 34% | — |
| ForecastBench | — | 61 |
| LiveBench | 29.6% | — |

## Math

- Amazon Nova Micro: 26.9 (#254)
- Grok 4.1 Fast: 31.9 (#221)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Math | 1206 | 1408 |
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| Omni-MATH | 21.4% | — |
| LiveBench Math | 34.5% | — |

## Knowledge

- Amazon Nova Micro: 29.6 (#237)
- Grok 4.1 Fast: 33.1 (#207)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| Vectara Hallucination Rate | 5.5% | 17.8% |
| LMArena Expert | 1184 | 1399 |
| MMLU-Pro | 51.1% | — |
| GPQA (HELM) | 38.3% | — |
| MMLU | 70.8% | — |

## Multimodal

- Amazon Nova Micro: —
- Grok 4.1 Fast: 37.0 (#76)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |

## Multilingual

- Amazon Nova Micro: 36.5 (#239)
- Grok 4.1 Fast: 51.0 (#114)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1186 | 1391 |
| LMArena Chinese | 1209 | 1441 |
| LMArena French | 1238 | 1415 |
| LMArena German | 1192 | 1404 |
| LMArena Japanese | 1154 | 1349 |
| LMArena Korean | 1150 | 1361 |
| LMArena Russian | 1185 | 1387 |
| LMArena Spanish | 1225 | 1413 |

## Instruction Following

- Amazon Nova Micro: 56.3 (#272)
- Grok 4.1 Fast: 72.7 (#133)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1174 | 1376 |
| LiveBench Instruction Following | 48% | — |
| IFEval | 76% | — |

## Long Context

- Amazon Nova Micro: 36.5 (#229)
- Grok 4.1 Fast: 42.4 (#126)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1205 | 1390 |

## Writing & Preference

- Amazon Nova Micro: 39.5 (#247)
- Grok 4.1 Fast: 57.2 (#131)

| Benchmark | Amazon Nova Micro | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1208 | 1408 |
| LMArena Creative Writing | 1172 | 1394 |
| LMArena Multi-Turn | 1178 | 1389 |
| EQ-Bench Creative Writing | — | 1327 |
| WildBench | 74.3% | — |
| LiveBench Language | 15.8% | — |

## FAQ

### Is Amazon Nova Micro better than Grok 4.1 Fast?

Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 30.4 on the Noometry Index. Amazon Nova Micro costs 4.5× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.

### Which is cheaper, Amazon Nova Micro or Grok 4.1 Fast?

Amazon Nova Micro is cheaper. It lists at $0.035 per million input tokens and $0.14 per million output tokens; Grok 4.1 Fast lists at $0.20 and $0.50.

### Is Amazon Nova Micro or Grok 4.1 Fast better for coding?

Grok 4.1 Fast scores higher on coding benchmarks: 34.1 versus 30.5 in the Noometry coding category.

### Which has the bigger context window?

Both accept 128K tokens.

### How many benchmarks do Amazon Nova Micro and Grok 4.1 Fast share?

19 benchmarks have published results for both models. Amazon Nova Micro has 32 scored results on Noometry and Grok 4.1 Fast has 32.