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Gemini 3.5 Flash vs o1

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

  • Gemini 3.5 Flash has the higher intelligence index (92.2 vs 65.4)
  • Gemini 3.5 Flash is cheaper ($1.50 vs $15.00 per 1M input)
  • Gemini 3.5 Flash is faster
  • Gemini 3.5 Flash has a larger context window (1M)
Gemini 3.5 Flasho1
Intelligence index92.265.4
DeveloperGoogleOpenAI
TypeMultimodalLLM
AccessAPI onlyAPI only
Context window1,048,576 tokens200,000 tokens
Input price$1.50 / 1M$15.00 / 1M
Output price$9.00 / 1M$60.00 / 1M
Speed221 tok/s66 tok/s
ReleasedMay 19, 2026December 5, 2024
Parameters
Input modalitiesText, Image, Audio, VideoText, Image
Output modalitiesTextText

Shared benchmarks

Gemini 3.5 Flash
o1
GPQA Diamond
92.2
78
Humanity’s Last Exam
41
7.7