DeepSeek V4 Flash 0731 vs GPT-5 Pro
Compare DeepSeek V4 Flash 0731 by DeepSeek against GPT-5 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 33 shared challenges.
Our Verdict
DeepSeek V4 Flash 0731
GPT-5 Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
DeepSeek V4 Flash 0731 is 429x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Flash 0731
Input
$0.14
107× cheaper
Output
$0.28
429× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
DeepSeek V4 Flash 0731 is cheaper on both — 107× input, 429× output
Writing DNA
Style Comparison
Similarity
42%
DeepSeek V4 Flash 0731 uses 568.3x more bold
DeepSeek V4 Flash 0731
GPT-5 Pro
52%Vocabulary65%
18wSentence Length15w
0.38Hedging0.32
5.7Bold0.0
3.4Lists2.9
0.00Emoji0.00
0.83Headings0.00
0.04Transitions0.01
Based on 23 + 11 text responses
Research
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