GPT OSS 120B vs GPT OSS 20B
Compare GPT OSS 120B and GPT OSS 20B, both from OpenAI, in 40 community votes, gpt oss 120b wins 79% of head-to-head duels, context windows of 131K vs 131K, tested across 54 shared challenges.
Reasoning: GPT OSS 120B wins 78% of votes
Web Design: GPT OSS 120B wins 71% of votes
Image Generation: GPT OSS 120B wins 100% of votes
Our Verdict
GPT OSS 120BWinner
GPT OSS 20BRunner-up
Pick GPT OSS 120B. In 40 blind votes, GPT OSS 120B wins 79% of the time. That's not luck.
GPT OSS 120B particularly excels in Image Generation, Reasoning, Web Design. GPT OSS 20B is 8.0x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
GPT OSS 120B
Input
$0.18
Output
$0.80
GPT OSS 20B
Input
$0.02
9.0× cheaper
Output
$0.10
8.0× cheaper
GPT OSS 20B is cheaper on both — 9.0× input, 8.0× output
Writing DNA
Style Comparison
Similarity
85%
GPT OSS 20B uses 1.9x more transitions
GPT OSS 120B
GPT OSS 20B
52%Vocabulary54%
19wSentence Length17w
0.28Hedging0.26
7.4Bold5.9
1.8Lists3.3
0.15Emoji0.10
0.73Headings0.75
0.17Transitions0.32
Based on 21 + 21 text responses
Research
What we learned reading every model
FAQ
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