Model comparison
Granite 4.0 H Small vs o3-pro
o3-pro is the stronger model overall, scoring 42.9 to 36.5 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Granite 4.0 H Small scores higher in 2 categories and o3-pro in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.2 to 37.7.
- 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.
Side by side
| Granite 4.0 H Small | o3-pro | |
|---|---|---|
| Provider | IBM | OpenAI |
| Noometry Index | 36.5 | 42.9 |
| Released | — | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 19 | 12 |
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Category by category
Coding o3-pro leads
Granite 4.0 H Small: 36.4 (#209), o3-pro: 55.5 (#24)
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1249 | — |
Reasoning Too close to call
Granite 4.0 H Small: 24.4 (#163), o3-pro: 23.8 (#171)
| 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 | — | 147.42 |
Math Not comparable
Granite 4.0 H Small: 31.4 (#223), o3-pro: —
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Omni-MATH | 29.6% | — |
| LMArena Math | 1247 | — |
Knowledge Granite 4.0 H Small leads
Granite 4.0 H Small: 32.0 (#215), o3-pro: 29.5 (#238)
| 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 | 1251 | — |
Multilingual Not comparable
Granite 4.0 H Small: 38.6 (#228), o3-pro: —
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| LMArena Non-English | 1216 | — |
| LMArena Chinese | 1249 | — |
| LMArena Russian | 1201 | — |
| LMArena Spanish | 1258 | — |
Instruction Following Not comparable
Granite 4.0 H Small: 68.7 (#183), o3-pro: —
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| IFEval | 89% | — |
| LMArena Instruction Following | 1222 | — |
Long Context o3-pro leads
Granite 4.0 H Small: 37.7 (#213), o3-pro: 72.2 (#1)
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1242 | — |
Writing & Preference o3-pro leads
Granite 4.0 H Small: 43.8 (#227), o3-pro: 57.1 (#133)
| Benchmark | Granite 4.0 H Small | o3-pro |
|---|---|---|
| LMArena Text | 1241 | — |
| LMArena Creative Writing | 1211 | — |
| Short-Story Creative Writing | — | 84.4% |
| WildBench | 73.9% | — |
| LMArena Multi-Turn | 1242 | — |
Frequently asked questions
Is Granite 4.0 H Small better than o3-pro?
o3-pro is the stronger model overall, scoring 42.9 to 36.5 on the Noometry Index.
Is Granite 4.0 H Small or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 36.4 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.