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.
Our Verdict
DeepSeek V4 Pro
GPT OSS 120BRunner-up
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.
Too close to call
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
GPT OSS 120B
Input
$0.18
9.7× cheaper
Output
$0.80
4.3× cheaper
GPT OSS 120B is cheaper on both — 9.7× input, 4.3× output
Writing DNA
Style Comparison
Similarity
55%
GPT OSS 120B uses 4.4x more emoji
DeepSeek V4 Pro
GPT OSS 120B
57%Vocabulary52%
18wSentence Length19w
0.52Hedging0.28
3.3Bold7.4
2.3Lists1.8
0.04Emoji0.15
0.45Headings0.73
0.15Transitions0.17
Based on 27 + 21 text responses
Research
What we learned reading every model
FAQ
