Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT-4
Compare Gemini 2.5 Flash Preview 05-20 (thinking) by Google AI against GPT-4 by OpenAI, context windows of 1.0M vs 8K, tested across 7 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview 05-20 (thinking)
GPT-4
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 05-20 (thinking) is 17x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
200× cheaper
Output
$3.50
17× cheaper
GPT-4
Input
$30.00
Output
$60.00
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both — 200× input, 17× output
Writing DNA
Style Comparison
Similarity
40%
GPT-4 uses 110.0x more hedging
Gemini 2.5 Flash Preview 05-20 (thinking)
GPT-4
70%Vocabulary59%
11wSentence Length18w
0.00Hedging1.10
4.2Bold0.8
7.3Lists2.5
0.00Emoji0.00
0.00Headings0.00
0.00Transitions0.45
Based on 3 + 15 text responses
Research
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FAQ
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