DeepSeek V4 Pro vs GPT-4.5
Compare DeepSeek V4 Pro by DeepSeek against GPT-4.5 by OpenAI, context windows of 1.0M vs 128K, tested across 24 shared challenges. Updated April 2026.
Which is better, DeepSeek V4 Pro or GPT-4.5?
DeepSeek V4 Pro and GPT-4.5 are both competitive models. DeepSeek V4 Pro costs $1.74/M input tokens vs $75/M for GPT-4.5. Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Pro and GPT-4.5
DeepSeek V4 Pro is made by deepseek while GPT-4.5 is from openai. DeepSeek V4 Pro has a 1049K token context window compared to GPT-4.5's 128K. On pricing, DeepSeek V4 Pro costs $1.74/M input tokens vs $75/M for GPT-4.5.
Per 1M tokens
DeepSeek V4 Pro is cheaper on both — 43× input, 43× output
No community votes yet. On paper, DeepSeek V4 Pro has the edge — newer, bigger context window.
DeepSeek V4 Pro is 43x cheaper per token — worth considering if cost matters.
Style Comparison
DeepSeek V4 Pro uses 3.5x more emoji
