Gemini 2.0 Flash Thinking vs GPT-5 Pro
Compare Gemini 2.0 Flash Thinking by Google AI against GPT-5 Pro by OpenAI, context windows of 500K vs 400K, tested across 17 shared challenges.
Our Verdict
GPT-5 Pro
Gemini 2.0 Flash ThinkingRunner-up
No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer.
Gemini 2.0 Flash Thinking is 240x 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
60× cheaper
Output
$0.50
240× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Gemini 2.0 Flash Thinking is cheaper on both — 60× input, 240× output
Writing DNA
Style Comparison
Similarity
51%
Gemini 2.0 Flash Thinking uses 376.7x more bold
Gemini 2.0 Flash Thinking
GPT-5 Pro
54%Vocabulary65%
15wSentence Length15w
0.64Hedging0.32
3.8Bold0.0
2.4Lists2.9
0.00Emoji0.00
0.03Headings0.00
0.30Transitions0.01
Based on 13 + 11 text responses
Research
What we learned reading every model
FAQ
