Model comparison
gpt-oss-120b vs Granite 4.0 H Small
gpt-oss-120b and Granite 4.0 H Small score almost the same on the Noometry Index (36.3 vs 36.5), so choose on price, context window or the category you care about most.
Last verified . 19 shared benchmarks.
Summary
- They share 19 benchmarks with published results for both. gpt-oss-120b scores higher in 5 categories and Granite 4.0 H Small in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where gpt-oss-120b leads 52.5 to 31.4.
- The biggest single-benchmark swing is Omni-MATH: 68.8% for gpt-oss-120b and 29.6% for Granite 4.0 H Small.
Side by side
| gpt-oss-120b | Granite 4.0 H Small | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 36.3 | 36.5 |
| Released | 2025-08-05 | — |
| Weights | Open | Open |
| Context window | 131K | — |
| Max output | 41K | — |
| Input $ / M tokens | $0.037 | — |
| Output $ / M tokens | $0.17 | — |
| Results tracked | 48 | 19 |
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Category by category
Coding Granite 4.0 H Small leads
gpt-oss-120b: 33.5 (#256), Granite 4.0 H Small: 36.4 (#209)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| LMArena Coding | 1380 | 1249 |
| SWE-bench Verified (bash only) | 26% | — |
| Aider Polyglot | 41.8% | — |
| SciCode | 36% | — |
| WeirdML | 48.2% | — |
| ALE-Bench | 575.62 | — |
| AlgoTune | 1.41 | — |
Agentic & Tool Use Not comparable
gpt-oss-120b: 12.2 (#153), Granite 4.0 H Small: —
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| Terminal-Bench | 18.7% | — |
| APEX-Agents | 4.4% | — |
| METR Time Horizons | 56.6% | — |
| Vending-Bench 2 | -21.53 | — |
Reasoning Granite 4.0 H Small leads
gpt-oss-120b: 20.0 (#245), Granite 4.0 H Small: 24.4 (#163)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| LMArena Hard Prompts | 1364 | 1240 |
| SimpleBench | 22.1% | — |
| Kagi LLM Benchmark | 58.6% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 20% | — |
| Mystery Game Puzzles | 2% | — |
| DTBench | 76.3% | — |
| LMCA | 22.1% | — |
| Surface Evolver Bench | 25% | — |
| Epoch Capabilities Index | 139.93 | — |
Math gpt-oss-120b leads
gpt-oss-120b: 52.5 (#50), Granite 4.0 H Small: 31.4 (#223)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| Omni-MATH | 68.8% | 29.6% |
| LMArena Math | 1389 | 1247 |
| OTIS Mock AIME 2024-2025 | 88.9% | — |
Knowledge gpt-oss-120b leads
gpt-oss-120b: 42.4 (#96), Granite 4.0 H Small: 32.0 (#215)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| MMLU-Pro | 79.5% | 56.9% |
| Vectara Hallucination Rate | 14.2% | 5.2% |
| GPQA (HELM) | 68.4% | 38.3% |
| LMArena Expert | 1356 | 1251 |
| GPQA Diamond | 75.8% | — |
| Confabulations | 15.7% | — |
Multilingual gpt-oss-120b leads
gpt-oss-120b: 48.0 (#147), Granite 4.0 H Small: 38.6 (#228)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| LMArena Non-English | 1351 | 1216 |
| LMArena Chinese | 1385 | 1249 |
| LMArena Russian | 1343 | 1201 |
| LMArena Spanish | 1389 | 1258 |
| LMArena French | 1369 | — |
| LMArena German | 1353 | — |
| LMArena Japanese | 1331 | — |
| LMArena Korean | 1282 | — |
Instruction Following Too close to call
gpt-oss-120b: 69.3 (#173), Granite 4.0 H Small: 68.7 (#183)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| IFEval | 83.6% | 89% |
| LMArena Instruction Following | 1318 | 1222 |
Long Context Granite 4.0 H Small leads
gpt-oss-120b: 31.4 (#278), Granite 4.0 H Small: 37.7 (#213)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| LMArena Longer Query | 1319 | 1242 |
| Fiction.LiveBench | 44.4% | — |
Writing & Preference gpt-oss-120b leads
gpt-oss-120b: 46.5 (#217), Granite 4.0 H Small: 43.8 (#227)
| Benchmark | gpt-oss-120b | Granite 4.0 H Small |
|---|---|---|
| LMArena Text | 1365 | 1241 |
| LMArena Creative Writing | 1275 | 1211 |
| WildBench | 84.5% | 73.9% |
| LMArena Multi-Turn | 1340 | 1242 |
| Short-Story Creative Writing | 77.1% | — |
| EQ-Bench Creative Writing | 961 | — |
Frequently asked questions
Is gpt-oss-120b better than Granite 4.0 H Small?
gpt-oss-120b and Granite 4.0 H Small score almost the same on the Noometry Index (36.3 vs 36.5), so choose on price, context window or the category you care about most.
Is gpt-oss-120b or Granite 4.0 H Small better for coding?
Granite 4.0 H Small scores higher on coding benchmarks: 36.4 versus 33.5 in the Noometry coding category.
How many benchmarks do gpt-oss-120b and Granite 4.0 H Small share?
19 benchmarks have published results for both models. gpt-oss-120b has 48 scored results on Noometry and Granite 4.0 H Small has 19.