# Amazon Nova Experimental Chat 26 01 10 vs Grok 4 Fast

> Amazon Nova Experimental Chat 26 01 10 is the stronger model overall, scoring 42.8 to 39.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-26-01-10-vs-grok-4-fast
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. Amazon Nova Experimental Chat 26 01 10 scores higher in 3 categories and Grok 4 Fast in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 42.7.

## Snapshot

| | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 42.8 | 39.4 |
| Rank | 107 | 167 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Amazon Nova Experimental Chat 26 01 10: 42.7 (#96)
- Grok 4 Fast: 32.5 (#271)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Coding | 1447 | 1429 |
| LMArena WebDev | — | 1159 |
| WeirdML | — | 42.9% |

## Agentic & Tool Use

- Amazon Nova Experimental Chat 26 01 10: —
- Grok 4 Fast: 29.5 (#86)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |

## Reasoning

- Amazon Nova Experimental Chat 26 01 10: 28.9 (#98)
- Grok 4 Fast: 22.2 (#201)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Hard Prompts | 1415 | 1412 |
| ARC-AGI-2 | — | 5.3% |
| Kagi LLM Benchmark | — | 66.1% |
| ARC-AGI-1 | — | 48.5% |
| DTBench | — | 82.7% |
| Epoch Capabilities Index | — | 144.2 |
| ForecastBench | — | 60.5 |

## Math

- Amazon Nova Experimental Chat 26 01 10: 38.5 (#136)
- Grok 4 Fast: 38.9 (#123)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1404 | 1419 |

## Knowledge

- Amazon Nova Experimental Chat 26 01 10: 40.3 (#120)
- Grok 4 Fast: 32.0 (#214)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Expert | 1444 | 1411 |
| Vectara Hallucination Rate | — | 19.7% |

## Multilingual

- Amazon Nova Experimental Chat 26 01 10: 50.2 (#126)
- Grok 4 Fast: 51.3 (#111)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1381 | 1396 |
| LMArena Chinese | 1372 | 1457 |
| LMArena Russian | 1391 | 1389 |
| LMArena Spanish | 1390 | 1415 |
| LMArena French | — | 1431 |
| LMArena German | — | 1383 |
| LMArena Japanese | — | 1352 |
| LMArena Korean | — | 1357 |

## Instruction Following

- Amazon Nova Experimental Chat 26 01 10: 72.9 (#126)
- Grok 4 Fast: 73.2 (#121)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1381 | 1387 |

## Long Context

- Amazon Nova Experimental Chat 26 01 10: 42.7 (#119)
- Grok 4 Fast: 63.2 (#3)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Longer Query | 1400 | 1415 |
| Fiction.LiveBench | — | 94.4% |

## Writing & Preference

- Amazon Nova Experimental Chat 26 01 10: 57.4 (#129)
- Grok 4 Fast: 60.0 (#102)

| Benchmark | Amazon Nova Experimental Chat 26 01 10 | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1396 | 1407 |
| LMArena Creative Writing | 1331 | 1387 |
| LMArena Multi-Turn | 1380 | 1414 |

## FAQ

### Is Amazon Nova Experimental Chat 26 01 10 better than Grok 4 Fast?

Amazon Nova Experimental Chat 26 01 10 is the stronger model overall, scoring 42.8 to 39.4 on the Noometry Index.

### Is Amazon Nova Experimental Chat 26 01 10 or Grok 4 Fast better for coding?

Amazon Nova Experimental Chat 26 01 10 scores higher on coding benchmarks: 42.7 versus 32.5 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 26 01 10 and Grok 4 Fast share?

13 benchmarks have published results for both models. Amazon Nova Experimental Chat 26 01 10 has 13 scored results on Noometry and Grok 4 Fast has 30.