Gemini 3.5 Flash vs GPT-5 Nano
Head to head on 21 shared benchmarks, with price, context window, and release dates.
Benchmark scores
57evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 3.5 Flash Google (Alphabet Inc.) | 71.8 | 39.0% | 92.2% | 42.7% | 76.3% | 78.9% | 78.2% | 64.9% | 75.6% | 84.6% | 88.2% | 82.0% | 55.8% | 76.6% | 68.1% | 31.0% | 49.9% | 53.1% | 74.4% | 40.9% | 95.3% | - | - | - | - | - | 64.7% | 26.0% | - | 1087elo | - | 57.9% | - | - | - | - | - | - | - | - | 76.3% | - | - | - | - | - | - | - | - | 53.1% | 62.9% | - | - | 48.7% | - | - | - | 64.3% |
| GPT-5 Nano OpenAI | 28 | 8.3% | 67.6% | 9.5% | 67.6% | 52.8% | 62.4% | 43.4% | 55.7% | 46.8% | 68.4% | 40.3% | 30.4% | 72.9% | 53.6% | 12.0% | 30.4% | 36.6% | 67.4% | 12.1% | 36.5% | 0.0% | 83.7% | 0.25 | 0.21 | 6.7% | - | - | 10.0% | - | 703elo | - | 78.2% | 1.18 | 100.0% | 78.9% | 1.38 | 1.38 | 100.0% | 100.0% | - | 26.7% | 78.0% | 100.0% | 0.0% | 0.0% | 1.72 | 34.8% | 29.7% | - | - | 20.41 | -6.67 | - | 82.0% | 82.0% | 40.0% | 48.9% |
2 / 2 models
| Attribute | Gemini 3.5 Flash Google (Alphabet Inc.) | GPT-5 Nano OpenAI |
|---|---|---|
| Description | Gemini 3.5 Flash is an AI model from Google (Alphabet Inc.). | GPT-5 nano is an AI model from OpenAI. |
| Family | Gemini | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 19 May 2026 | 7 Aug 2025 |
| Context | 1,048,576 | 400,000 |
| Input $/1M | $1.50 | $0.05 |
| Output $/1M | $9.00 | $0.40 |
| Cache read $/1M | $0.150 | $0.005 |
| Cache write $/1M | $0.083 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, video, file, audio | text, image, file |
| 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% |
FAQ
- Is Gemini 3.5 Flash or GPT-5 Nano better?
- Across the 21 benchmarks both models report on Sophon, Gemini 3.5 Flash leads on 21 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-5 Nano compare on GPQA Diamond?
- Gemini 3.5 Flash scores 92.2% and GPT-5 Nano scores 67.6% on GPQA Diamond.
- Which is cheaper, Gemini 3.5 Flash or GPT-5 Nano?
- GPT-5 Nano is cheaper at $0.40 per million output tokens against $9.00 for Gemini 3.5 Flash - about 22.5x.
- When were Gemini 3.5 Flash and GPT-5 Nano released?
- Gemini 3.5 Flash was released 19 May 2026 by Google (Alphabet Inc.). GPT-5 Nano was released 7 Aug 2025 by OpenAI.
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