Gemini 2.0 Flash Thinking vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare Gemini 2.0 Flash Thinking and Gemini 2.5 Flash Preview 05-20 (thinking), both from Google AI, context windows of 500K vs 1.0M, tested across 7 shared challenges.
Our Verdict
Gemini 2.0 Flash Thinking
Gemini 2.5 Flash Preview 05-20 (thinking)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.0 Flash Thinking is 7.0x 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
Output
$0.50
7.0× cheaper
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
1.7× cheaper
Output
$3.50
Gemini 2.5 Flash Preview 05-20 (thinking) wins input (1.7× cheaper)·Gemini 2.0 Flash Thinking wins output (7.0× cheaper)
Writing DNA
Style Comparison
Similarity
54%
Gemini 2.0 Flash Thinking uses 64.0x more hedging
Gemini 2.0 Flash Thinking
Gemini 2.5 Flash Preview 05-20 (thinking)
54%Vocabulary70%
15wSentence Length11w
0.64Hedging0.00
3.8Bold4.2
2.4Lists7.3
0.00Emoji0.00
0.03Headings0.00
0.30Transitions0.00
Based on 13 + 3 text responses
Research
What we learned reading every model
FAQ
