AI Hub
← All models

Gemini 1.5 Pro 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 67.3)
  • Gemini 3 Flash is cheaper ($0.50 vs $1.25 per 1M input)
  • Gemini 3 Flash is faster
  • Gemini 1.5 Pro has a larger context window (2M)
Gemini 1.5 ProGemini 3 Flash
Intelligence index67.390.2
DeveloperGoogleGoogle
TypeMultimodalMultimodal
AccessAPI onlyAPI only
Context window2,000,000 tokens1,048,576 tokens
Input price$1.25 / 1M$0.50 / 1M
Output price$5.00 / 1M$3.00 / 1M
Speed85 tok/s191 tok/s
ReleasedFebruary 15, 2024December 17, 2025
Parameters
Input modalitiesText, Image, Audio, VideoText, Image, Audio, Video
Output modalitiesTextText

Shared benchmarks

Gemini 1.5 Pro
Gemini 3 Flash
GPQA Diamond
59.1
90.4
Humanity’s Last Exam
4.9
34.7
LiveCodeBench
31.6
90.8
MMLU-Pro
75.8
89