Gemini 2.0 Flash Thinking vs OpenAI o3
Compare Gemini 2.0 Flash Thinking by Google AI against OpenAI o3 by OpenAI, tested across 21 shared challenges.
Our Verdict
OpenAI o3
Gemini 2.0 Flash ThinkingRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer.
Gemini 2.0 Flash Thinking is 80x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.0 Flash Thinking
Input
$0.25
40× cheaper
Output
$0.50
80× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Gemini 2.0 Flash Thinking is cheaper on both — 40× input, 80× output
Writing DNA
Style Comparison
Similarity
38%
OpenAI o3 uses 11.3x more headings
Gemini 2.0 Flash Thinking
OpenAI o3
54%Vocabulary68%
15wSentence Length14w
0.64Hedging0.26
3.8Bold0.7
2.4Lists3.0
0.00Emoji0.00
0.03Headings0.38
0.30Transitions0.12
Based on 13 + 16 text responses
Research
What we learned reading every model
FAQ
