DeepSeek R1
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DeepSeek R1 vs GPT-5 Codex
Compare DeepSeek R1 by DeepSeek against GPT-5 Codex by OpenAI, in 2 community votes, gpt-5 codex wins 100% of head-to-head duels, tested across 50 shared challenges. Updated April 2026.
Which is better, DeepSeek R1 or GPT-5 Codex?
GPT-5 Codex is the better choice overall, winning 100% of 2 blind community votes on Rival. Compare their real outputs side by side below.
Key Differences Between DeepSeek R1 and GPT-5 Codex
DeepSeek R1 is made by deepseek while GPT-5 Codex is from openai. In community voting, In 2 community votes, GPT-5 Codex wins 100% of head-to-head duels.
In 2 community votes, GPT-5 Codex wins 100% of head-to-head duels. GPT-5 Codex leads in Conversation. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Conversation: GPT-5 Codex wins 100% of votes
Our Verdict
GPT-5 CodexWinner
DeepSeek R1Runner-up
Pick GPT-5 Codex. In 2 blind votes, GPT-5 Codex wins 100% of the time. That's not luck.
GPT-5 Codex particularly excels in Conversation.
Clear winner
Writing DNA
Style Comparison
Similarity
98%
DeepSeek R1 uses 5.1x more transitions
DeepSeek R1
GPT-5 Codex
62%Vocabulary64%
15wSentence Length17w
0.52Hedging0.38
8.0Bold2.3
5.7Lists3.5
0.04Emoji0.15
0.62Headings0.49
0.28Transitions0.05
Based on 22 + 13 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
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