GPT-4o vs gpt-oss-120b
Head to head on 17 shared benchmarks, with price, context window, and release dates.
Benchmark scores
47evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| gpt-oss-120b OpenAI | 41.8% | 66.7% | 58.2% | 67.2% | 5.9% | 58.3% | 51.0% | 60.2% | 50.3% | 48.6% | 70.7% | 77.5% | 36.0% | 26.0% | 71.6% | 5.3% | 45.0% | - | - | 38.9% | 7.6% | - | - | 13.0% | - | 959elo | 35.8 | - | - | 57.6 | - | 38.8% | 68.9% | 39.2% | 1.62 | 1.53 | - | - | 80.0% | - | - | - | 97.9% | - | 65.6% | - | - | 49.6% |
| GPT-4o OpenAI | 18.2% | 6.0% | 45.9% | 54.3% | 2.4% | 34.3% | 55.1% | 46.1% | 70.1% | 49.0% | 30.9% | 74.8% | 33.3% | 21.6% | 74.5% | 8.3% | 25.1% | 15.0% | 38 | - | - | 0.0% | 0.33 | - | 6.1% | - | - | 0.3% | 96.1 | - | 0.0% | - | - | - | - | - | 75.9% | 10.8% | - | 57.4% | 54.0% | 5.71 | - | 61.2 | - | 0.98 | 32.5% | 33.4% |
2 / 2 models
| Attribute | GPT-4o OpenAI | gpt-oss-120b OpenAI |
|---|---|---|
| Description | GPT-4o 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 | 20 Nov 2024 | 5 Aug 2025 |
| Context | 128,000 | 131,072 |
| Input $/1M | $2.50 | $0.15 |
| Output $/1M | $10.00 | $0.60 |
| Cache read $/1M | $1.250 | $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 | Taubench61.2 pass^1 GSM8K96.1 Accuracy ScholarSearch5.71 Social Sciences & Humanities (%) MortgageTax57.4% AIME202438 pass@1 | 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 or gpt-oss-120b better?
- Across the 17 benchmarks both models report on Sophon, gpt-oss-120b leads on 12 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-4o and gpt-oss-120b compare on GPQA Diamond?
- GPT-4o scores 54.3% and gpt-oss-120b scores 67.2% on GPQA Diamond.
- Which is cheaper, GPT-4o or gpt-oss-120b?
- gpt-oss-120b is cheaper at $0.60 per million output tokens against $10.00 for GPT-4o - about 16.7x.
- When were GPT-4o and gpt-oss-120b released?
- GPT-4o was released 20 Nov 2024 by OpenAI. gpt-oss-120b was released 5 Aug 2025 by OpenAI.
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