Gemini 1.5 Flash vs Gemini 3 Flash
Google vs Google — benchmarks, pricing, and capabilities side by side.
- •Gemini 3 Flash has the higher intelligence index (90.2 vs 61.9)
- •Gemini 1.5 Flash is cheaper ($0.15 vs $0.50 per 1M input)
- •Gemini 3 Flash is faster
| Gemini 1.5 Flash | Gemini 3 Flash | |
|---|---|---|
| Intelligence index | 61.9 | 90.2 |
| Developer | ||
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Input price | $0.15 / 1M | $0.50 / 1M |
| Output price | $0.60 / 1M | $3.00 / 1M |
| Speed | 150 tok/s | 191 tok/s |
| Released | May 1, 2024 | December 17, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image, Audio, Video |
| Output modalities | — | Text |
Shared benchmarks
Gemini 1.5 Flash
Gemini 3 Flash
GPQA Diamond
51
90.4
Humanity’s Last Exam
4.2
34.7
LiveCodeBench
27.3
90.8
MMLU-Pro
67.3
89