Gemini 3.5 Flash vs Gemini 3 Deep Think
Google vs Google — benchmarks, pricing, and capabilities side by side.
- •Gemini 3.5 Flash has the higher intelligence index (92.2 vs 69.5)
- •Gemini 3 Deep Think is cheaper ($0.00 vs $1.50 per 1M input)
- •Gemini 3.5 Flash has a larger context window (1M)
| Gemini 3.5 Flash | Gemini 3 Deep Think | |
|---|---|---|
| Intelligence index | 92.2 | 69.5 |
| Developer | ||
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 1,000,000 tokens |
| Input price | $1.50 / 1M | $0.00 / 1M |
| Output price | $9.00 / 1M | $0.00 / 1M |
| Speed | 221 tok/s | — |
| Released | May 19, 2026 | November 18, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image, Audio, Video | Text, Image, Audio, Video |
| Output modalities | Text | Text |
Shared benchmarks
Gemini 3.5 Flash
Gemini 3 Deep Think
GPQA Diamond
92.2
93.8
Humanity’s Last Exam
41
41