GPT-4o-mini vs gpt-oss-120b
Head to head on 15 shared benchmarks, with price, context window, and release dates.
Benchmark scores
52evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| gpt-oss-120b OpenAI | 41.8% | 66.7% | 58.2% | 959elo | 67.2% | 5.9% | 58.3% | 51.0% | 60.2% | 50.3% | 48.6% | 70.7% | 77.5% | 36.0% | 71.6% | - | - | - | 38.9% | 7.6% | - | - | 13.0% | - | 35.8 | - | - | 57.6 | - | - | 38.8% | 68.9% | 39.2% | 1.62 | 1.53 | - | - | 80.0% | - | - | - | 97.9% | 26.0% | - | 5.3% | 65.6% | - | - | - | - | - | 45.0% | 49.6% |
| GPT-4o-mini OpenAI | 3.6% | 14.7% | 45.5% | 871elo | 42.6% | 4.2% | 31.0% | 47.2% | 43.0% | 65.8% | 32.9% | 23.4% | 64.8% | 22.9% | 60.5% | 16.7% | 11.7% | 50.7% | - | - | 0.29 | 0.0% | - | 0.0% | - | 0.0% | 1.54 | - | 0.0% | 72.0% | - | - | - | - | - | 78.9% | 62.8% | - | 54.5% | 78.0% | 3.81 | - | - | 100.0% | - | - | 0.36 | 0.78 | 83.3% | 54.5% | 22.5% | - | 39.6% |
2 / 2 models
| Attribute | GPT-4o-mini OpenAI | gpt-oss-120b OpenAI |
|---|---|---|
| Description | GPT-4o Mini is an AI model from OpenAI. | GPT-Oss 120b is an AI model from OpenAI, released with open weights. |
| Family | GPT | GPT |
| Params | - | - |
| Open weights | closed | open |
| License | proprietary | apache-2.0 |
| Released | 18 Jul 2024 | 5 Aug 2025 |
| Context | 128,000 | 131,072 |
| Input $/1M | $0.15 | $0.15 |
| Output $/1M | $0.60 | $0.60 |
| Cache read $/1M | $0.075 | $0.030 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 186 tok/s |
| Latency | 0.00 s | 0.50 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | OpenAI | OpenAI |
| Reported scores | GPQA Diamond67.2% (AA) Humanity's Last Exam (HLE)5.9% (AA) LiveCodeBench70.7% (AA) MMLU-Pro77.5% (AA) SciCode36.0% (AA) |
FAQ
- Is GPT-4o-mini or gpt-oss-120b better?
- Across the 15 benchmarks both models report on Sophon, gpt-oss-120b leads on 14 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-4o-mini and gpt-oss-120b compare on GPQA Diamond?
- GPT-4o-mini scores 42.6% and gpt-oss-120b scores 67.2% on GPQA Diamond.
- When were GPT-4o-mini and gpt-oss-120b released?
- GPT-4o-mini was released 18 Jul 2024 by OpenAI. gpt-oss-120b was released 5 Aug 2025 by OpenAI.
Comparing something else? Build your own side-by-side.