Gemini 2.5 Flash Preview vs OpenAI: GPT-5.6 Sol
Compare Gemini 2.5 Flash Preview by Google AI against OpenAI: GPT-5.6 Sol by OpenAI, context windows of 1.0M vs 1.1M, tested across 26 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Sol
Gemini 2.5 Flash PreviewRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Sol has the edge — bigger model tier, newer.
Gemini 2.5 Flash Preview is 50x 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
33× cheaper
Output
$0.60
50× cheaper
OpenAI: GPT-5.6 Sol
Input
$5.00
Output
$30.00
Gemini 2.5 Flash Preview is cheaper on both — 33× input, 50× output
Writing DNA
Style Comparison
Similarity
40%
OpenAI: GPT-5.6 Sol uses 3.3x more emoji
Gemini 2.5 Flash Preview
OpenAI: GPT-5.6 Sol
51%Vocabulary63%
15wSentence Length15w
0.70Hedging0.79
4.1Bold3.4
3.3Lists3.8
0.00Emoji0.03
0.09Headings0.95
0.24Transitions0.08
Based on 12 + 27 text responses
Research
What we learned reading every model
FAQ
