Gemini 3.5 Flash vs GPT-5.4
Google vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •Gemini 3.5 Flash has the higher intelligence index (92.2 vs 74.9)
- •Gemini 3.5 Flash is cheaper ($1.50 vs $2.50 per 1M input)
- •Gemini 3.5 Flash is faster
- •GPT-5.4 has a larger context window (1.1M)
| Gemini 3.5 Flash | GPT-5.4 | |
|---|---|---|
| Intelligence index | 92.2 | 74.9 |
| Developer | OpenAI | |
| Type | Multimodal | LLM |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| Input price | $1.50 / 1M | $2.50 / 1M |
| Output price | $9.00 / 1M | $15.00 / 1M |
| Speed | 221 tok/s | 84 tok/s |
| Released | May 19, 2026 | March 5, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image, Audio, Video | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
Gemini 3.5 Flash
GPT-5.4
GPQA Diamond
92.2
92
Humanity’s Last Exam
41
41.6