DeepSeek V4 Flash vs GPT-5
Compare DeepSeek V4 Flash by DeepSeek against GPT-5 by OpenAI, context windows of 1.0M vs 400K, tested across 51 shared challenges. Updated April 2026.
Which is better, DeepSeek V4 Flash or GPT-5?
DeepSeek V4 Flash and GPT-5 are both competitive models. DeepSeek V4 Flash costs $0.14/M input tokens vs $1.25/M for GPT-5. Context windows: 1049K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Flash and GPT-5
DeepSeek V4 Flash is made by deepseek while GPT-5 is from openai. DeepSeek V4 Flash has a 1049K token context window compared to GPT-5's 400K. On pricing, DeepSeek V4 Flash costs $0.14/M input tokens vs $1.25/M for GPT-5.
Per 1M tokens
DeepSeek V4 Flash is cheaper on both — 8.9× input, 36× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
DeepSeek V4 Flash is 36x cheaper per token — worth considering if cost matters.
Style Comparison
DeepSeek V4 Flash uses 19.3x more bold
