DeepSeek V4 Flash vs OpenAI o4-mini
Compare DeepSeek V4 Flash by DeepSeek against OpenAI o4-mini by OpenAI, in 18 community votes, openai o4-mini wins 77% of head-to-head duels, tested across 53 shared challenges. Updated May 2026.
Which is better, DeepSeek V4 Flash or OpenAI o4-mini?
OpenAI o4-mini is the better choice overall, winning 77% of 18 blind community votes on Rival. DeepSeek V4 Flash costs $0.14/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Flash and OpenAI o4-mini
DeepSeek V4 Flash is made by deepseek while OpenAI o4-mini is from openai. On pricing, DeepSeek V4 Flash costs $0.14/M input tokens vs $1.1/M for OpenAI o4-mini. In community voting, In 18 community votes, OpenAI o4-mini wins 77% of head-to-head duels.
In 18 community votes, OpenAI o4-mini wins 77% of head-to-head duels. DeepSeek V4 Flash leads in Image Generation, while OpenAI o4-mini leads in Reasoning, Web Design, Analysis. Based on blind community voting from the Rival open dataset of 18+ human preference judgments for this pair.
Per 1M tokens
DeepSeek V4 Flash is cheaper on both — 7.9× input, 16× output
Pick OpenAI o4-mini. In 18 blind votes, OpenAI o4-mini wins 77% of the time. That's not luck.
Pick DeepSeek V4 Flash for Image Generation. Pick OpenAI o4-mini for Reasoning, Web Design, Analysis. DeepSeek V4 Flash is 16x cheaper per token — worth considering if cost matters.
Style Comparison
DeepSeek V4 Flash uses 363.7x more bold
