# Granite 4.0 Micro vs Grok 4 Fast

> Grok 4 Fast is the stronger model overall, scoring 39.0 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/granite-4-0-micro-vs-grok-4-fast
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Grok 4 Fast leads 36.1 to 11.2.
- Granite 4.0 Micro has downloadable open weights; the other is API-only.

## Snapshot

| | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| Provider | IBM | xAI |
| Noometry Index | 28.8 | 39.0 |
| Rank | 312 | 164 |
| Context | 131K | — |
| Input $/M | $0.017 | — |
| Output $/M | $0.11 | — |
| Weights | Open | Proprietary |

## Coding

- Granite 4.0 Micro: —
- Grok 4 Fast: 32.3 (#264)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| LMArena WebDev | — | 1160 |
| WeirdML | — | 42.9% |
| LMArena Coding | — | 1429 |

## Agentic & Tool Use

- Granite 4.0 Micro: —
- Grok 4 Fast: 29.3 (#80)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |

## Reasoning

- Granite 4.0 Micro: 18.5 (#261)
- Grok 4 Fast: 22.5 (#179)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| ARC-AGI-2 | — | 5.3% |
| Kagi LLM Benchmark | — | 66.1% |
| ARC-AGI-1 | — | 48.5% |
| Chess Puzzles | 0% | — |
| LMArena Hard Prompts | — | 1413 |
| DTBench | — | 82.7% |
| Epoch Capabilities Index | — | 144.21 |
| ForecastBench | — | 60.5 |

## Math

- Granite 4.0 Micro: 11.2 (#301)
- Grok 4 Fast: 36.1 (#126)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.8% | — |
| Omni-MATH | 20.9% | — |
| LMArena Math | — | 1419 |

## Knowledge

- Granite 4.0 Micro: 9.9 (#299)
- Grok 4 Fast: 31.5 (#211)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| GPQA Diamond | 28.3% | — |
| MMLU-Pro | 39.5% | — |
| Vectara Hallucination Rate | — | 19.7% |
| GPQA (HELM) | 30.7% | — |
| LMArena Expert | — | 1411 |

## Multilingual

- Granite 4.0 Micro: —
- Grok 4 Fast: 51.5 (#106)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | — | 1397 |
| LMArena Chinese | — | 1458 |
| LMArena French | — | 1433 |
| LMArena German | — | 1383 |
| LMArena Japanese | — | 1358 |
| LMArena Korean | — | 1359 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1414 |

## Instruction Following

- Granite 4.0 Micro: 70.0 (#164)
- Grok 4 Fast: 73.4 (#116)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| IFEval | 84.9% | — |
| LMArena Instruction Following | — | 1388 |

## Long Context

- Granite 4.0 Micro: —
- Grok 4 Fast: 63.2 (#3)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| Fiction.LiveBench | — | 94.4% |
| LMArena Longer Query | — | 1415 |

## Writing & Preference

- Granite 4.0 Micro: 46.7 (#212)
- Grok 4 Fast: 60.2 (#96)

| Benchmark | Granite 4.0 Micro | Grok 4 Fast |
|---|---|---|
| LMArena Text | — | 1407 |
| LMArena Creative Writing | — | 1388 |
| WildBench | 67% | — |
| LMArena Multi-Turn | — | 1414 |

## FAQ

### Is Granite 4.0 Micro better than Grok 4 Fast?

Grok 4 Fast is the stronger model overall, scoring 39.0 to 28.8 on the Noometry Index.

### How many benchmarks do Granite 4.0 Micro and Grok 4 Fast share?

0 benchmarks have published results for both models. Granite 4.0 Micro has 8 scored results on Noometry and Grok 4 Fast has 30.