Gemini 2.5 Flash Preview (thinking) vs OpenAI: GPT-5.6 Sol
Compare Gemini 2.5 Flash Preview (thinking) by Google AI against OpenAI: GPT-5.6 Sol by OpenAI, context windows of 1.0M vs 1.1M, tested across 20 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Sol
Gemini 2.5 Flash Preview (thinking)Runner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier, newer.
Gemini 2.5 Flash Preview (thinking) is 8.6x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
29× cheaper
Output
$3.50
8.6× cheaper
OpenAI: GPT-5.6 Sol
Input
$5.00
Output
$30.00
Gemini 2.5 Flash Preview (thinking) is cheaper on both — 29× input, 8.6× output
Writing DNA
Style Comparison
Similarity
31%
OpenAI: GPT-5.6 Sol uses 3.3x more emoji
Gemini 2.5 Flash Preview (thinking)
OpenAI: GPT-5.6 Sol
53%Vocabulary63%
14wSentence Length15w
0.38Hedging0.79
4.4Bold3.4
4.1Lists3.8
0.00Emoji0.03
0.00Headings0.95
0.24Transitions0.08
Based on 7 + 27 text responses
Research
What we learned reading every model
FAQ
