DeepSeek V4 Pro vs GPT OSS 120B
Compare DeepSeek V4 Pro by DeepSeek against GPT OSS 120B by OpenAI, context windows of 1.0M vs 131K, tested across 53 shared challenges. Updated June 2026.
Which is better, DeepSeek V4 Pro or GPT OSS 120B?
DeepSeek V4 Pro and GPT OSS 120B are both competitive models. DeepSeek V4 Pro costs $1.74/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 1049K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between DeepSeek V4 Pro and GPT OSS 120B
DeepSeek V4 Pro is made by deepseek while GPT OSS 120B is from openai. DeepSeek V4 Pro has a 1049K token context window compared to GPT OSS 120B's 131K. On pricing, DeepSeek V4 Pro costs $1.74/M input tokens vs $0.18/M for GPT OSS 120B.
Per 1M tokens
GPT OSS 120B is cheaper on both — 9.7× input, 4.3× output
No community votes yet. On paper, DeepSeek V4 Pro has the edge — newer, bigger context window.
GPT OSS 120B is 4.3x cheaper per token — worth considering if cost matters.
Style Comparison
GPT OSS 120B uses 4.4x more emoji
