GPT-5 vs gpt-oss-120b
Head to head on 17 shared benchmarks, with price, context window, and release dates.
Benchmark scores
76evals · sort by any column, ⤢ to expand fullscreen
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| GPT-5 OpenAI | 88.0% | 94.3% | 61.1% | 1627elo | 72.8 | 85.4% | 28.5% | 73.1% | 84.6% | 0.52 | 1.62 | 87.1% | 42.9% | 74.4% | 73.4% | 32.6% | 84.8% | 46.7% | 91.1% | 94.6% | 0.0% | - | - | 0.15 | 0.0% | 68.1% | 4.58 | - | 57.7% | 80.0% | 80.0% | 91.7% | 32.4% | 0.0% | 88.9% | 83.3% | 100.0% | - | 48.9% | 83.4% | 58.2% | - | - | - | - | - | - | - | 37.5% | 100.0% | 99.4% | 0.0% | 92.7% | 92.7% | 49.6% | 83.7% | 93.3% | - | 10.0% | 0.0% | 65.5% | 60.0% | 0.26 | 0.0% | 18.0% | 43.7% | - | 74.9% | 2.34 | - | 87.5% | 0.86 | 20.1% | 54.8% | 90.0% | 90.0% | 61.9% |
| gpt-oss-120b OpenAI | 41.8% | 93.4% | 58.2% | 961elo | 35.8 | 78.2% | 19.6% | 69.0% | 87.8% | 1.62 | 1.53 | 80.8% | 34.0% | 26.0% | 71.6% | 23.5% | 65.8% | - | - | - | - | 38.9% | 7.6% | - | - | - | - | 11.0% | - | - | - | - | - | - | - | - | - | 57.6 | - | - | - | 51.0% | 60.2% | 38.8% | 50.3% | 48.6% | 68.9% | 39.2% | - | - | - | - | - | - | - | - | - | 80.0% | - | - | - | - | - | - | - | - | 97.9% | - | - | 65.6% | - | - | - | - | - | - | 54.1% |
2 / 2 models
| Attribute | GPT-5 OpenAI | gpt-oss-120b OpenAI |
|---|---|---|
| Description | OpenAI's August 2025 unified frontier model that auto-routes between a fast model and a deeper "thinking" variant. | GPT-Oss 120b is an AI model from OpenAI, released with open weights. |
| Family | GPT 5 | GPT |
| Params | Undisclosed (closed) | - |
| Open weights | closed | open |
| License | proprietary | apache-2.0 |
| Released | 7 Aug 2025 | 5 Aug 2025 |
| Context | 400,000 | 131,072 |
| Input $/1M | $1.25 | $0.15 |
| Output $/1M | $10.00 | $0.59 |
| Cache read $/1M | $0.125 | $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 | openai | - |
| Publisher | OpenAI | OpenAI |
| Reported scores | SWE-bench74.9% (Verified) GPQA Diamond85.4% (AA) Humanity's Last Exam (HLE)28.5% (AA) IFBench73.1% (AA) | 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 or gpt-oss-120b better?
- Across the 17 benchmarks both models report on Sophon, GPT-5 leads on 15 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-5 and gpt-oss-120b compare on GPQA Diamond?
- GPT-5 scores 85.4% and gpt-oss-120b scores 78.2% on GPQA Diamond.
- Which is cheaper, GPT-5 or gpt-oss-120b?
- gpt-oss-120b is cheaper at $0.59 per million output tokens against $10.00 for GPT-5 - about 16.9x.
- When were GPT-5 and gpt-oss-120b released?
- GPT-5 was released 7 Aug 2025 by OpenAI. gpt-oss-120b was released 5 Aug 2025 by OpenAI.
Other head-to-heads
56GPT-4.1 Mini vs GPT-541 shared evalsGPT-5 vs GPT-5 Mini36 shared evalsClaude Sonnet 4.5 vs GPT-531 shared evalsGPT-5 vs GPT-5 Nano28 shared evalsGPT-4.1 vs GPT-528 shared evalsGPT-5 Mini vs gpt-oss-120b25 shared evalsClaude 4 Sonnet vs GPT-525 shared evalsGemini 2.5 Pro vs GPT-524 shared evalsClaude Sonnet 4.5 vs gpt-oss-120b23 shared evalsGPT-5 vs GPT-5.223 shared evalsClaude Opus 4.5 vs GPT-523 shared evalsDeepSeek V3.2 vs gpt-oss-120b23 shared evalsGPT-5 Nano vs gpt-oss-120b22 shared evalsGPT-5.2 vs gpt-oss-120b22 shared evalsGPT-4.1 Nano vs GPT-521 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsgpt-oss-120b vs Grok 4.1 Fast20 shared evalsGLM 4.7 vs gpt-oss-120b20 shared evalsGemini 3.1 Pro Preview vs GPT-519 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsGPT-5 vs GPT-5.419 shared evalsDeepSeek V3.2 vs GPT-519 shared evalsGPT-4o vs GPT-519 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-5 vs GPT-5.518 shared evalsGPT-5 vs Kimi K2.518 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 Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Opus 4.7 vs gpt-oss-120b18 shared evalsClaude Opus 4.8 vs GPT-517 shared evalsClaude Opus 4.7 vs GPT-517 shared evalsGLM 4.7 vs GPT-517 shared evalsGPT-4o vs gpt-oss-120b17 shared evalsGPT-5.4 Mini vs gpt-oss-120b17 shared evalsClaude Fable 5 vs GPT-516 shared evalsGPT-4o-mini vs GPT-516 shared evalsClaude Sonnet 4.6 vs GPT-516 shared evalsGLM 5.1 vs GPT-516 shared evalsGPT-5 vs GPT-5.4 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-5 vs Qwen3.6 Plus15 shared evalsGPT-4o-mini vs gpt-oss-120b15 shared evalsGPT-4.1 Nano vs gpt-oss-120b14 shared evalsGPT-5 vs GPT-6 Astra12 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evals
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