DeepSeek V3.1 vs GPT-4o (Omni)
Compare DeepSeek V3.1 by DeepSeek against GPT-4o (Omni) by OpenAI, context windows of 164K vs 128K, tested across 54 shared challenges. Updated June 2026.
Which is better, DeepSeek V3.1 or GPT-4o (Omni)?
DeepSeek V3.1 and GPT-4o (Omni) are both competitive models. DeepSeek V3.1 costs $0.2/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 164K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek V3.1 and GPT-4o (Omni)
DeepSeek V3.1 is made by deepseek while GPT-4o (Omni) is from openai. DeepSeek V3.1 has a 164K token context window compared to GPT-4o (Omni)'s 128K. On pricing, DeepSeek V3.1 costs $0.2/M input tokens vs $2.5/M for GPT-4o (Omni).
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
DeepSeek V3.1 is 13x cheaper per token — worth considering if cost matters.
Cost per 1M tokens
DeepSeek V3.1 is cheaper on both — 13× input, 13× output
Style Comparison
GPT-4o (Omni) uses 3.5x more headings
