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Gemini 3.5 Flash vs Gemini 3 Pro

Google vs Google — benchmarks, pricing, and capabilities side by side.

  • Gemini 3.5 Flash has the higher intelligence index (92.2 vs 82.8)
  • Gemini 3.5 Flash is cheaper ($1.50 vs $2.00 per 1M input)
  • Gemini 3.5 Flash is faster
  • Gemini 3.5 Flash has a larger context window (1M)
Gemini 3.5 FlashGemini 3 Pro
Intelligence index92.282.8
DeveloperGoogleGoogle
TypeMultimodalMultimodal
AccessAPI onlyAPI only
Context window1,048,576 tokens1,000,000 tokens
Input price$1.50 / 1M$2.00 / 1M
Output price$9.00 / 1M$12.00 / 1M
Speed221 tok/s141 tok/s
ReleasedMay 19, 2026November 18, 2025
Parameters
Input modalitiesText, Image, Audio, VideoText, Image, Audio, Video
Output modalitiesTextText

Shared benchmarks

Gemini 3.5 Flash
Gemini 3 Pro
GPQA Diamond
92.2
91.9
Humanity’s Last Exam
41
37.5