DeepSeek R1
Nothing here. The model returned empty. We stared at it for a while.
DeepSeek R1 vs GPT-5.1-Codex
Compare DeepSeek R1 by DeepSeek against GPT-5.1-Codex by OpenAI, context windows of 128K vs 400K, tested across 52 shared challenges. Updated April 2026.
Which is better, DeepSeek R1 or GPT-5.1-Codex?
DeepSeek R1 and GPT-5.1-Codex are both competitive models. DeepSeek R1 costs $0.55/M input tokens vs $1.25/M for GPT-5.1-Codex. Context windows: 128K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek R1 and GPT-5.1-Codex
DeepSeek R1 is made by deepseek while GPT-5.1-Codex is from openai. DeepSeek R1 has a 128K token context window compared to GPT-5.1-Codex's 400K. On pricing, DeepSeek R1 costs $0.55/M input tokens vs $1.25/M for GPT-5.1-Codex.
Our Verdict
GPT-5.1-Codex
DeepSeek R1Runner-up
No community votes yet. On paper, GPT-5.1-Codex has the edge — bigger model tier, newer, bigger context window.
DeepSeek R1 is 4.6x cheaper per token — worth considering if cost matters.
Slight edge
Writing DNA
Style Comparison
Similarity
97%
DeepSeek R1 uses 4.3x more emoji
DeepSeek R1
GPT-5.1-Codex
62%Vocabulary70%
15wSentence Length17w
0.52Hedging0.39
8.0Bold3.4
5.7Lists3.5
0.04Emoji0.00
0.62Headings0.50
0.28Transitions0.38
Based on 22 + 14 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.
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