Gemini 3 Flash Preview vs GPT-5.3 Chat
Compare Gemini 3 Flash Preview by Google AI against GPT-5.3 Chat by OpenAI, context windows of 1.0M vs 128K, tested across 53 shared challenges.
Our Verdict
Gemini 3 Flash Preview
GPT-5.3 Chat
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 3 Flash Preview is 4.7x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3 Flash Preview
Input
$0.50
3.5× cheaper
Output
$3.00
4.7× cheaper
GPT-5.3 Chat
Input
$1.75
Output
$14.00
Gemini 3 Flash Preview is cheaper on both — 3.5× input, 4.7× output
Writing DNA
Style Comparison
Similarity
52%
Gemini 3 Flash Preview uses 84.2x more headings
Gemini 3 Flash Preview
GPT-5.3 Chat
55%Vocabulary59%
18wSentence Length26w
0.42Hedging0.84
7.1Bold1.7
4.5Lists6.6
0.00Emoji0.00
0.84Headings0.00
0.07Transitions0.25
Based on 24 + 23 text responses
Research
What we learned reading every model
FAQ
