Gemini 3.5 Flash vs gpt-oss-120b
Head to head on 17 shared benchmarks, with price, context window, and release dates.
Benchmark scores
43evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 3.5 Flash Google (Alphabet Inc.) | 64.7% | 26.0% | 71.8 | 92.2% | 42.7% | 76.3% | 78.9% | 78.2% | 64.9% | 75.6% | 84.6% | 88.2% | 82.0% | 53.1% | 74.4% | 40.9% | 95.3% | - | - | - | - | 1087elo | - | 57.9% | 39.0% | - | - | - | - | 76.3% | 55.8% | 76.6% | - | - | 68.1% | 31.0% | 49.9% | - | - | - | 53.1% | 62.9% | 48.7% | 64.3% |
| gpt-oss-120b OpenAI | 58.2% | 13.0% | 35.8 | 78.2% | 19.6% | 69.0% | 51.0% | 60.2% | 38.8% | 50.3% | 48.6% | 68.9% | 39.2% | 38.9% | 71.6% | 23.5% | 65.8% | 41.8% | 93.4% | 38.9% | 7.6% | - | 959elo | - | - | 57.6 | 87.8% | 1.62 | 1.53 | - | - | - | 80.0% | 80.8% | - | - | - | 97.9% | 26.0% | 65.6% | - | - | - | 54.4% |
2 / 2 models
| Attribute | Gemini 3.5 Flash Google (Alphabet Inc.) | gpt-oss-120b OpenAI |
|---|---|---|
| Description | Gemini 3.5 Flash is an AI model from Google (Alphabet Inc.). | GPT-Oss 120b is an AI model from OpenAI, released with open weights. |
| Family | Gemini | GPT |
| Params | - | - |
| Open weights | closed | open |
| License | proprietary | apache-2.0 |
| Released | 19 May 2026 | 5 Aug 2025 |
| Context | 1,048,576 | 131,072 |
| Input $/1M | $1.50 | $0.15 |
| Output $/1M | $9.00 | $0.60 |
| Cache read $/1M | $0.150 | $0.030 |
| Cache write $/1M | $0.083 | - |
| Speed | 0 tok/s | 172 tok/s |
| Latency | 0.00 s | 0.52 s |
| Modalities | text, image, video, file, audio | text |
| Providers | - | - |
| Publisher | Google (Alphabet Inc.) | OpenAI |
| Reported scores | Humanity's Last Exam (HLE)42.7% (AA) τ²-bench (Tau²-bench)95.3% (AA) Terminal-Bench (Hard)40.9% (AA) Vals Index53.1% | GPQA Diamond78.2% (AA) Humanity's Last Exam (HLE)19.6% (AA) LiveCodeBench87.8% (AA) MMLU-Pro80.8% (AA) SciCode38.9% (AA) |
FAQ
- Is Gemini 3.5 Flash or gpt-oss-120b better?
- Across the 17 benchmarks both models report on Sophon, Gemini 3.5 Flash leads on 17 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Gemini 3.5 Flash and gpt-oss-120b compare on GPQA Diamond?
- Gemini 3.5 Flash scores 92.2% and gpt-oss-120b scores 78.2% on GPQA Diamond.
- Which is cheaper, Gemini 3.5 Flash or gpt-oss-120b?
- gpt-oss-120b is cheaper at $0.60 per million output tokens against $9.00 for Gemini 3.5 Flash - about 15.0x.
- When were Gemini 3.5 Flash and gpt-oss-120b released?
- Gemini 3.5 Flash was released 19 May 2026 by Google (Alphabet Inc.). gpt-oss-120b was released 5 Aug 2025 by OpenAI.
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