GPT-5 Mini vs gpt-oss-120b
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
71evals · sort by any column, ⤢ to expand fullscreen
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| gpt-oss-120b OpenAI | 41.8% | 93.4% | 38.9% | 58.2% | 961elo | 35.8 | 78.2% | 19.6% | 69.0% | 51.0% | 60.2% | 38.8% | 50.3% | 48.6% | 68.9% | 39.2% | 87.8% | 1.62 | 1.53 | 80.8% | 34.0% | 26.0% | 71.6% | 23.5% | 65.8% | - | - | 7.6% | - | - | - | - | - | 11.0% | - | - | - | - | - | - | - | - | - | - | - | 57.6 | - | - | - | - | - | - | 80.0% | - | - | - | - | - | 97.9% | - | - | 65.6% | - | - | - | - | - | - | - | - | - | 54.1% |
| GPT-5 Mini OpenAI | 0.0% | 90.7% | 0.0% | 60.2% | 1313elo | 56.2 | 82.8% | 21.5% | 75.4% | 69.1% | 68.2% | 55.2% | 65.3% | 75.5% | 82.2% | 68.3% | 83.8% | 1.54 | 1.54 | 83.7% | 39.0% | 59.8% | 75.2% | 33.3% | 68.4% | 0.0% | 1.13 | - | -0.15 | 20.0% | 25.0% | 40.0% | 1.7 | - | 100.0% | 18.1% | 2.8% | 100.0% | 66.7% | 0.0% | 88.3% | 27.2% | 60.0% | 100.0% | 90.0% | - | 47.2% | 80.0% | 0.0% | 43.0% | 80.6% | 80.0% | - | 66.9% | 9.0% | 43.0% | 16.8% | 4.95 | - | 39.7% | 0.0% | - | 9.5% | 0.0% | 86.1% | 0.49 | 39.21 | 272.11 | 14.2% | 86.0% | 86.0% | 51.6% |
2 / 2 models
| Attribute | GPT-5 Mini OpenAI | gpt-oss-120b OpenAI |
|---|---|---|
| Description | GPT-5 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 | 7 Aug 2025 | 5 Aug 2025 |
| Context | 400,000 | 131,072 |
| Input $/1M | $0.25 | $0.15 |
| Output $/1M | $2.00 | $0.59 |
| Cache read $/1M | $0.025 | $0.075 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 224 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-5 Mini or gpt-oss-120b better?
- Across the 25 benchmarks both models report on Sophon, GPT-5 Mini leads on 20 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-5 Mini and gpt-oss-120b compare on GPQA Diamond?
- GPT-5 Mini scores 82.8% and gpt-oss-120b scores 78.2% on GPQA Diamond.
- Which is cheaper, GPT-5 Mini or gpt-oss-120b?
- gpt-oss-120b is cheaper at $0.59 per million output tokens against $2.00 for GPT-5 Mini - about 3.4x.
- When were GPT-5 Mini and gpt-oss-120b released?
- GPT-5 Mini was released 7 Aug 2025 by OpenAI. gpt-oss-120b was released 5 Aug 2025 by OpenAI.
Other head-to-heads
56GPT-5 Mini vs GPT-5 Nano38 shared evalsGPT-5 vs GPT-5 Mini36 shared evalsGPT-4.1 Mini vs GPT-5 Mini32 shared evalsGPT-5 Mini vs GPT-5.232 shared evalsClaude Sonnet 4.5 vs GPT-5 Mini31 shared evalsClaude Opus 4.5 vs GPT-5 Mini31 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsGemini 3.1 Pro Preview vs GPT-5 Mini27 shared evalsGPT-5 Mini vs GPT-5.427 shared evalsDeepSeek V3.2 vs GPT-5 Mini26 shared evalsGemini 2.5 Pro vs GPT-5 Mini26 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 shared evalsGPT-5 Mini vs GPT-5.525 shared evalsGPT-5 Mini vs Kimi K2.525 shared evalsGLM 5.1 vs GPT-5 Mini25 shared evalsClaude Opus 4.7 vs GPT-5 Mini25 shared evalsGLM 4.7 vs GPT-5 Mini25 shared evalsClaude Opus 4.8 vs GPT-5 Mini24 shared evalsGPT-5.4 Mini vs GPT-5 Mini24 shared evalsClaude Sonnet 4.5 vs gpt-oss-120b23 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsDeepSeek V3.2 vs gpt-oss-120b23 shared evalsGPT-4.1 vs GPT-5 Mini22 shared evalsGPT-5 Nano vs gpt-oss-120b22 shared evalsGPT-5.2 vs gpt-oss-120b22 shared evalsGPT-4.1 Nano vs GPT-5 Mini21 shared evalsGPT-5 Mini vs Qwen3.6 Plus21 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsGPT-4o vs GPT-5 Mini20 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 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 evalsGPT-5.4 vs gpt-oss-120b18 shared evalsClaude Opus 4.7 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsGPT-5 vs gpt-oss-120b17 shared evalsGPT-4o vs gpt-oss-120b17 shared evalsGPT-5.4 Mini vs gpt-oss-120b17 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-oss-120b15 shared evalsGPT-4.1 Nano vs gpt-oss-120b14 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evals
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