Gemini 2.5 Flash Preview vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare Gemini 2.5 Flash Preview and Gemini 2.5 Flash Preview 05-20 (thinking), both from Google AI, context windows of 1.0M vs 1.0M, tested across 10 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview
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 2.5 Flash Preview is 5.8x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview
Input
$0.15
Output
$0.60
5.8× cheaper
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
Output
$3.50
Writing DNA
Style Comparison
Similarity
60%
Gemini 2.5 Flash Preview uses 70.3x more hedging
Gemini 2.5 Flash Preview
Gemini 2.5 Flash Preview 05-20 (thinking)
51%Vocabulary70%
15wSentence Length11w
0.70Hedging0.00
4.1Bold4.2
3.3Lists7.3
0.00Emoji0.00
0.09Headings0.00
0.24Transitions0.00
Based on 12 + 3 text responses
Research
What we learned reading every model
FAQ
