Gemini 2.5 Flash Preview (thinking) vs Gemini Pro 1.0
Compare Gemini 2.5 Flash Preview (thinking) and Gemini Pro 1.0, both from Google AI, in 2 community votes, gemini 2.5 flash preview (thinking) wins 100% of head-to-head duels, context windows of 1.0M vs 33K, tested across 18 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview (thinking)Winner
Gemini Pro 1.0Runner-up
Pick Gemini 2.5 Flash Preview (thinking). In 2 blind votes, Gemini 2.5 Flash Preview (thinking) wins 100% of the time. That's not luck.
Clear winner
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
2.9× cheaper
Output
$3.50
Gemini Pro 1.0
Input
$0.50
Output
$1.50
2.3× cheaper
Gemini 2.5 Flash Preview (thinking) wins input (2.9× cheaper)·Gemini Pro 1.0 wins output (2.3× cheaper)
Writing DNA
Style Comparison
Similarity
67%
Gemini Pro 1.0 uses 45.9x more headings
Gemini 2.5 Flash Preview (thinking)
Gemini Pro 1.0
53%Vocabulary61%
14wSentence Length13w
0.38Hedging0.41
4.4Bold5.3
4.1Lists5.4
0.00Emoji0.00
0.00Headings0.46
0.24Transitions0.38
Based on 7 + 13 text responses
Research
What we learned reading every model
FAQ
