DeepSeek V3 (March 2024) vs OpenAI o3

Compare DeepSeek V3 (March 2024) by DeepSeek against OpenAI o3 by OpenAI, tested across 53 shared challenges. Updated April 2026.

Which is better, DeepSeek V3 (March 2024) or OpenAI o3?

DeepSeek V3 (March 2024) and OpenAI o3 are both competitive models. DeepSeek V3 (March 2024) costs $0.14/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.

Key Differences Between DeepSeek V3 (March 2024) and OpenAI o3

DeepSeek V3 (March 2024) is made by deepseek while OpenAI o3 is from openai. On pricing, DeepSeek V3 (March 2024) costs $0.14/M input tokens vs $10/M for OpenAI o3.

Our Verdict
DeepSeek V3 (March 2024)
DeepSeek V3 (March 2024)
OpenAI o3
OpenAI o3

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

DeepSeek V3 (March 2024) is 143x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
94%

DeepSeek V3 (March 2024) uses 25.6x more emoji

DeepSeek V3 (March 2024)
OpenAI o3
58%Vocabulary68%
18wSentence Length14w
0.73Hedging0.26
7.5Bold0.7
7.6Lists3.0
0.26Emoji0.00
1.60Headings0.38
0.08Transitions0.12
Based on 16 + 16 text responses
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DeepSeek V3 (March 2024)OpenAI o3

279 AI models invented the same fake scientist.

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