Model comparison
gpt-oss-120b vs Granite 4.0 Micro
gpt-oss-120b is the stronger model overall, scoring 36.0 to 28.8 on the Noometry Index. Granite 4.0 Micro costs 1.7× less per token, which makes it the better buy when gpt-oss-120b's lead doesn't matter for your workload.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. gpt-oss-120b scores higher in 3 categories and Granite 4.0 Micro in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in math, where gpt-oss-120b leads 50.6 to 11.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 88.9% for gpt-oss-120b and 2.8% for Granite 4.0 Micro.
- Granite 4.0 Micro is cheaper at $0.017 / $0.11 per million input/output tokens, against $0.037 / $0.17 for gpt-oss-120b.
- gpt-oss-120b accepts more context: 131K tokens versus 131K.
Side by side
| gpt-oss-120b | Granite 4.0 Micro | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 36.0 | 28.8 |
| Released | 2025-08-05 | 2025-10-02 |
| Weights | Open | Open |
| Context window | 131K | 131K |
| Max output | 41K | 118K |
| Input $ / M tokens | $0.037 | $0.017 |
| Output $ / M tokens | $0.17 | $0.11 |
| Results tracked | 48 | 8 |
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Category by category
Coding Not comparable
gpt-oss-120b: 33.2 (#251), Granite 4.0 Micro: —
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| SWE-bench Verified (bash only) | 26% | — |
| Aider Polyglot | 41.8% | — |
| SciCode | 36% | — |
| WeirdML | 48.2% | — |
| LMArena Coding | 1380 | — |
| ALE-Bench | 575.62 | — |
| AlgoTune | 1.41 | — |
Agentic & Tool Use Not comparable
gpt-oss-120b: 12.1 (#145), Granite 4.0 Micro: —
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| Terminal-Bench | 18.7% | — |
| APEX-Agents | 4.4% | — |
| METR Time Horizons | 56.6% | — |
| Vending-Bench 2 | -21.53 | — |
Reasoning Too close to call
gpt-oss-120b: 19.5 (#236), Granite 4.0 Micro: 18.5 (#261)
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| Chess Puzzles | 20% | 0% |
| SimpleBench | 22.1% | — |
| Kagi LLM Benchmark | 58.6% | — |
| CritPt | 1.1% | — |
| LMArena Hard Prompts | 1364 | — |
| Mystery Game Puzzles | 2% | — |
| DTBench | 76.3% | — |
| LMCA | 22.1% | — |
| Surface Evolver Bench | 25% | — |
| Epoch Capabilities Index | 139.94 | — |
Math gpt-oss-120b leads
gpt-oss-120b: 50.6 (#43), Granite 4.0 Micro: 11.2 (#301)
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | 2.8% |
| Omni-MATH | 68.8% | 20.9% |
| LMArena Math | 1388 | — |
Knowledge gpt-oss-120b leads
gpt-oss-120b: 42.3 (#89), Granite 4.0 Micro: 9.9 (#299)
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| GPQA Diamond | 75.8% | 28.3% |
| MMLU-Pro | 79.5% | 39.5% |
| GPQA (HELM) | 68.4% | 30.7% |
| Confabulations | 15.7% | — |
| Vectara Hallucination Rate | 14.2% | — |
| LMArena Expert | 1356 | — |
Multilingual Not comparable
gpt-oss-120b: 48.2 (#142), Granite 4.0 Micro: —
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| LMArena Non-English | 1350 | — |
| LMArena Chinese | 1384 | — |
| LMArena French | 1370 | — |
| LMArena German | 1355 | — |
| LMArena Japanese | 1332 | — |
| LMArena Korean | 1283 | — |
| LMArena Russian | 1343 | — |
| LMArena Spanish | 1388 | — |
Instruction Following Too close to call
gpt-oss-120b: 69.5 (#168), Granite 4.0 Micro: 70.0 (#164)
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| IFEval | 83.6% | 84.9% |
| LMArena Instruction Following | 1318 | — |
Long Context Not comparable
gpt-oss-120b: 31.4 (#273), Granite 4.0 Micro: —
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| Fiction.LiveBench | 44.4% | — |
| LMArena Longer Query | 1319 | — |
Writing & Preference Too close to call
gpt-oss-120b: 46.7 (#213), Granite 4.0 Micro: 46.7 (#212)
| Benchmark | gpt-oss-120b | Granite 4.0 Micro |
|---|---|---|
| WildBench | 84.5% | 67% |
| LMArena Text | 1366 | — |
| LMArena Creative Writing | 1274 | — |
| Short-Story Creative Writing | 77.1% | — |
| EQ-Bench Creative Writing | 961 | — |
| LMArena Multi-Turn | 1340 | — |
Frequently asked questions
Is gpt-oss-120b better than Granite 4.0 Micro?
gpt-oss-120b is the stronger model overall, scoring 36.0 to 28.8 on the Noometry Index. Granite 4.0 Micro costs 1.7× less per token, which makes it the better buy when gpt-oss-120b's lead doesn't matter for your workload.
Which is cheaper, gpt-oss-120b or Granite 4.0 Micro?
Granite 4.0 Micro is cheaper. It lists at $0.017 per million input tokens and $0.11 per million output tokens; gpt-oss-120b lists at $0.037 and $0.17.
Which has the bigger context window?
gpt-oss-120b does, with 131K tokens against 131K.
How many benchmarks do gpt-oss-120b and Granite 4.0 Micro share?
8 benchmarks have published results for both models. gpt-oss-120b has 48 scored results on Noometry and Granite 4.0 Micro has 8.