DeepSeek V4 Pro vs o1
Compare DeepSeek V4 Pro by DeepSeek against o1 by OpenAI, context windows of 1.0M vs 128K, tested across 53 shared challenges. Updated May 2026.
Which is better, DeepSeek V4 Pro or o1?
DeepSeek V4 Pro and o1 are both competitive models. DeepSeek V4 Pro costs $1.74/M input tokens vs $15/M for o1. Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Pro and o1
DeepSeek V4 Pro is made by deepseek while o1 is from openai. DeepSeek V4 Pro has a 1049K token context window compared to o1's 128K. On pricing, DeepSeek V4 Pro costs $1.74/M input tokens vs $15/M for o1.
Per 1M tokens
DeepSeek V4 Pro is cheaper on both — 8.6× input, 17× output
No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer, bigger context window.
DeepSeek V4 Pro is 17x cheaper per token — worth considering if cost matters.
Style Comparison
DeepSeek V4 Pro uses 3.5x more emoji
