Gemini 3.5 Flash vs GPT-5.4
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
42evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.4 OpenAI | 65.3% | 81.0% | 1272elo | 78.3 | 47.6% | 92.0% | 43.7% | 73.9% | 82.0% | 77.5% | 79.3% | 70.2% | 82.6% | 94.1% | 88.1% | 82.8% | 41.3% | 77.5% | 68.3% | 56.0% | 43.3% | 56.6% | 74.0% | 57.6% | 67.4% | 87.1% | 13.1% | 1.47 | 34.1% | 9.0% | 1836elo | - | 87.2% | 78.5% | 92063 | 86 | 52.2% | -0.61 | 40.8 | 80 | - | - | 65.5% |
| Gemini 3.5 Flash Google (Alphabet Inc.) | 64.7% | 26.0% | 1087elo | 71.8 | 39.0% | 92.2% | 42.7% | 76.3% | 78.9% | 78.2% | 64.9% | 75.6% | 84.6% | 88.2% | 82.0% | 76.3% | 55.8% | 76.6% | 68.1% | 31.0% | 49.9% | 53.1% | 74.4% | 40.9% | 48.7% | 95.3% | - | - | - | - | - | 57.9% | - | - | - | - | - | - | - | - | 53.1% | 62.9% | 64.3% |
2 / 2 models
| Attribute | Gemini 3.5 Flash Google (Alphabet Inc.) | GPT-5.4 OpenAI |
|---|---|---|
| Description | Gemini 3.5 Flash is an AI model from Google (Alphabet Inc.). | GPT-5.4 is an AI model from OpenAI. |
| Family | Gemini | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 19 May 2026 | 5 Mar 2026 |
| Context | 1,048,576 | 1,050,000 |
| Input $/1M | $1.50 | $2.50 |
| Output $/1M | $9.00 | $15.00 |
| Cache read $/1M | $0.150 | $0.250 |
| 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% | GPQA Diamond92.0% (AA) SciCode56.6% (AA) τ²-bench (Tau²-bench)87.1% (AA) Terminal-Bench (Hard)57.6% (AA) Vibe Code Bench v1.167.4% |
FAQ
- Is Gemini 3.5 Flash or GPT-5.4 better?
- Across the 26 benchmarks both models report on Sophon, GPT-5.4 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-5.4 compare on GPQA Diamond?
- Gemini 3.5 Flash scores 92.2% and GPT-5.4 scores 92.0% on GPQA Diamond.
- Which is cheaper, Gemini 3.5 Flash or GPT-5.4?
- Gemini 3.5 Flash is cheaper at $9.00 per million output tokens against $15.00 for GPT-5.4 - about 1.7x.
- When were Gemini 3.5 Flash and GPT-5.4 released?
- Gemini 3.5 Flash was released 19 May 2026 by Google (Alphabet Inc.). GPT-5.4 was released 5 Mar 2026 by OpenAI.
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