# Granite 4.0 H Small vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 35.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/ibm-granite-h-small-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Granite 4.0 H Small scores higher in 1 category and o3-pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.1 to 37.6.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 5.2% for Granite 4.0 H Small and 23.3% for o3-pro.
- Granite 4.0 H Small has downloadable open weights; the other is API-only.

## Snapshot

| | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Provider | IBM | OpenAI |
| Noometry Index | 35.9 | 42.7 |
| Rank | 213 | 94 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Open | Proprietary |

## Coding

- Granite 4.0 H Small: 35.8 (#207)
- o3-pro: 55.1 (#22)

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1247 | — |

## Reasoning

- Granite 4.0 H Small: 23.4 (#164)
- o3-pro: 24.1 (#152)

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1240 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Math

- Granite 4.0 H Small: 29.3 (#219)
- o3-pro: —

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Omni-MATH | 29.6% | — |
| LMArena Math | 1251 | — |

## Knowledge

- Granite 4.0 H Small: 31.5 (#210)
- o3-pro: 29.0 (#234)

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Vectara Hallucination Rate | 5.2% | 23.3% |
| MMLU-Pro | 56.9% | — |
| Confabulations | — | 14.2% |
| GPQA (HELM) | 38.3% | — |
| LMArena Expert | 1244 | — |

## Multilingual

- Granite 4.0 H Small: 38.7 (#223)
- o3-pro: —

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| LMArena Non-English | 1216 | — |
| LMArena Chinese | 1250 | — |
| LMArena Russian | 1198 | — |
| LMArena Spanish | 1258 | — |

## Instruction Following

- Granite 4.0 H Small: 68.9 (#178)
- o3-pro: —

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| IFEval | 89% | — |
| LMArena Instruction Following | 1221 | — |

## Long Context

- Granite 4.0 H Small: 37.6 (#209)
- o3-pro: 72.1 (#1)

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1240 | — |

## Writing & Preference

- Granite 4.0 H Small: 44.0 (#222)
- o3-pro: 57.1 (#128)

| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| LMArena Text | 1241 | — |
| LMArena Creative Writing | 1210 | — |
| Short-Story Creative Writing | — | 84.4% |
| WildBench | 73.9% | — |
| LMArena Multi-Turn | 1243 | — |

## FAQ

### Is Granite 4.0 H Small better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 35.9 on the Noometry Index.

### Is Granite 4.0 H Small or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 35.8 in the Noometry coding category.

### How many benchmarks do Granite 4.0 H Small and o3-pro share?

1 benchmark has published results for both models. Granite 4.0 H Small has 19 scored results on Noometry and o3-pro has 12.