o3 Mini
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o3 Mini vs DeepSeek R1
Compare o3 Mini by OpenAI against DeepSeek R1 by DeepSeek, in 2 community votes, deepseek r1 wins 100% of head-to-head duels, context windows of 64K vs 128K, tested across 53 shared challenges. Updated March 2026.
Which is better, o3 Mini or DeepSeek R1?
DeepSeek R1 is the better choice overall, winning 100% of 2 blind community votes on Rival. o3 Mini costs $1.1/M input tokens vs $0.55/M for DeepSeek R1. Context windows: 64K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between o3 Mini and DeepSeek R1
o3 Mini is made by openai while DeepSeek R1 is from deepseek. o3 Mini has a 64K token context window compared to DeepSeek R1's 128K. On pricing, o3 Mini costs $1.1/M input tokens vs $0.55/M for DeepSeek R1. In community voting, In 2 community votes, DeepSeek R1 wins 100% of head-to-head duels.
In 2 community votes, DeepSeek R1 wins 100% of head-to-head duels. DeepSeek R1 leads in Web Design. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Web Design: DeepSeek R1 wins 100% of votes
Our Verdict
DeepSeek R1Winner
o3 MiniRunner-up
Pick DeepSeek R1. In 2 blind votes, DeepSeek R1 wins 100% of the time. That's not luck.
DeepSeek R1 particularly excels in Web Design.
Clear winner
Writing DNA
Style Comparison
Similarity
99%
DeepSeek R1 uses 4.3x more emoji
o3 Mini
DeepSeek R1
65%Vocabulary62%
17wSentence Length15w
0.74Hedging0.52
3.9Bold8.0
1.7Lists5.7
0.00Emoji0.04
0.47Headings0.62
0.38Transitions0.28
Based on 12 + 22 text responses
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