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% | 93.4% | 58.2% | 961elo | 78.2% | 19.6% | 69.0% | 51.0% | 60.2% | 50.3% | 48.6% | 87.8% | 80.8% | 34.0% | 71.6% | - | - | - | 38.9% | 7.6% | - | - | 11.0% | - | 35.8 | - | - | 57.6 | - | - | 38.8% | 68.9% | 39.2% | 1.62 | 1.53 | - | - | 80.0% | - | - | - | 97.9% | 26.0% | - | 23.5% | 65.6% | - | - | - | - | - | 65.8% | 54.1% |
| GPT-4o-mini OpenAI | 3.6% | 14.7% | 45.5% | 873elo | 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 | $0.59 |
| Cache read $/1M | $0.075 | $0.075 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 209 tok/s |
| Latency | 0.00 s | 0.51 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | OpenAI | OpenAI |
| Reported scores | GPQA Diamond78.2% (AA) Humanity's Last Exam (HLE)19.6% (AA) LiveCodeBench87.8% (AA) MMLU-Pro80.8% (AA) SciCode34.0% (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 78.2% on GPQA Diamond.
- Which is cheaper, GPT-4o-mini or gpt-oss-120b?
- gpt-oss-120b is cheaper at $0.59 per million output tokens against $0.60 for GPT-4o-mini - about 1.0x.
- 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.
Other head-to-heads
56GPT-5 Mini vs gpt-oss-120b25 shared evalsClaude Sonnet 4.5 vs gpt-oss-120b23 shared evalsDeepSeek V3.2 vs gpt-oss-120b23 shared evalsGPT-4.1 Mini vs GPT-4o-mini22 shared evalsGPT-5 Nano vs gpt-oss-120b22 shared evalsGPT-5.2 vs gpt-oss-120b22 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsGPT-4o vs GPT-4o-mini21 shared evalsgpt-oss-120b vs Grok 4.1 Fast20 shared evalsGLM 4.7 vs gpt-oss-120b20 shared evalsGPT-5.5 vs gpt-oss-120b19 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsGemini 2.5 Pro vs GPT-4o-mini19 shared evalsGLM 5.1 vs gpt-oss-120b19 shared evalsGemini 2.5 Pro vs gpt-oss-120b19 shared evalsGPT-4o-mini vs GPT-5 Mini18 shared evalsGemini 3.1 Pro Preview vs gpt-oss-120b18 shared evalsClaude Opus 4.8 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude 4 Sonnet vs GPT-4o-mini18 shared evalsGPT-5.4 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Opus 4.7 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.5 vs GPT-4o-mini17 shared evalsGPT-5 vs gpt-oss-120b17 shared evalsGPT-4.1 Nano vs GPT-4o-mini17 shared evalsGPT-4o vs gpt-oss-120b17 shared evalsGPT-5.4 Mini vs gpt-oss-120b17 shared evalsGPT-4o-mini vs GPT-516 shared evalsGPT-4o-mini vs GPT-5 Nano16 shared evalsGPT-4.1 vs GPT-4o-mini16 shared evalsGPT-4.1 vs gpt-oss-120b16 shared evalsgpt-oss-120b vs Qwen3.6 Plus16 shared evalsGPT-4.1 Mini vs gpt-oss-120b15 shared evalsGPT-4o-mini vs GPT-5.215 shared evalsClaude Opus 4.5 vs GPT-4o-mini15 shared evalsDeepSeek V3.2 vs GPT-4o-mini15 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGLM 4.7 vs GPT-4o-mini14 shared evalsGPT-4.1 Nano vs gpt-oss-120b14 shared evalsGPT-4o-mini vs GPT-5.513 shared evalsGemini 3.1 Pro Preview vs GPT-4o-mini12 shared evalsClaude Opus 4.8 vs GPT-4o-mini12 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsGPT-4o-mini vs GPT-5.412 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsClaude Sonnet 4.6 vs GPT-4o-mini12 shared evalsGLM 5.1 vs GPT-4o-mini12 shared evalsClaude Opus 4.7 vs GPT-4o-mini12 shared evalsGPT-4o-mini vs GPT-5.4 Mini12 shared evalsGPT-4o-mini vs Qwen3.6 Plus11 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evalsGPT-4o-mini vs GPT-6 Astra4 shared evals
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