DeepSeek V3 (March 2024) vs GPT-5.1-Codex-Mini
Compare DeepSeek V3 (March 2024) by DeepSeek against GPT-5.1-Codex-Mini by OpenAI, context windows of 128K vs 400K, tested across 54 shared challenges.
Our Verdict
GPT-5.1-Codex-Mini
DeepSeek V3 (March 2024)Runner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — newer, bigger context window.
DeepSeek V3 (March 2024) is 21x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V3 (March 2024)
Input
$0.14
11× cheaper
Output
$0.28
21× cheaper
GPT-5.1-Codex-Mini
Input
$1.50
Output
$6.00
DeepSeek V3 (March 2024) is cheaper on both — 11× input, 21× output
Writing DNA
Style Comparison
Similarity
29%
DeepSeek V3 (March 2024) uses 25.6x more emoji
DeepSeek V3 (March 2024)
GPT-5.1-Codex-Mini
58%Vocabulary65%
18wSentence Length20w
0.73Hedging0.56
7.5Bold3.3
7.6Lists3.4
0.26Emoji0.00
1.60Headings0.08
0.08Transitions0.05
Based on 16 + 13 text responses
Research
What we learned reading every model
FAQ
