DeepSeek V4 Pro vs OpenAI o3
Compare DeepSeek V4 Pro by DeepSeek against OpenAI o3 by OpenAI, tested across 53 shared challenges. Updated April 2026.
Which is better, DeepSeek V4 Pro or OpenAI o3?
DeepSeek V4 Pro and OpenAI o3 are both competitive models. DeepSeek V4 Pro costs $1.74/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Pro and OpenAI o3
DeepSeek V4 Pro is made by deepseek while OpenAI o3 is from openai. On pricing, DeepSeek V4 Pro costs $1.74/M input tokens vs $10/M for OpenAI o3.
API pricing
Per 1M tokens
DeepSeek V4 Pro
Input
$1.74
5.7× cheaper
Output
$3.48
11× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
DeepSeek V4 Pro is cheaper on both — 5.7× input, 11× output
Our Verdict
DeepSeek V4 Pro
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 V4 Pro is 11x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
63%
DeepSeek V4 Pro uses 3.5x more emoji
DeepSeek V4 Pro
OpenAI o3
57%Vocabulary68%
18wSentence Length14w
0.52Hedging0.26
3.3Bold0.7
2.3Lists3.0
0.04Emoji0.00
0.45Headings0.38
0.15Transitions0.12
Based on 27 + 16 text responses
FAQ
