Gemini 2.0 Flash Thinking vs GPT-5
Compare Gemini 2.0 Flash Thinking by Google AI against GPT-5 by OpenAI, context windows of 500K vs 400K, tested across 21 shared challenges.
Our Verdict
GPT-5
Gemini 2.0 Flash ThinkingRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer.
Gemini 2.0 Flash Thinking is 20x 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
5.0× cheaper
Output
$0.50
20× cheaper
GPT-5
Input
$1.25
Output
$10.00
Gemini 2.0 Flash Thinking is cheaper on both — 5.0× input, 20× output
Writing DNA
Style Comparison
Similarity
42%
Gemini 2.0 Flash Thinking uses 20.0x more bold
Gemini 2.0 Flash Thinking
GPT-5
54%Vocabulary65%
15wSentence Length13w
0.64Hedging0.20
3.8Bold0.2
2.4Lists4.6
0.00Emoji0.00
0.03Headings0.16
0.30Transitions0.03
Based on 13 + 16 text responses
Research
What we learned reading every model
FAQ
