GPT OSS 120B
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GPT OSS 120B vs GPT-5
Compare GPT OSS 120B and GPT-5, both from OpenAI, in 21 community votes, gpt-5 wins 87% of head-to-head duels, context windows of 131K vs 400K, tested across 47 shared challenges. Updated April 2026.
Which is better, GPT OSS 120B or GPT-5?
GPT-5 is the better choice overall, winning 87% of 21 blind community votes on Rival. GPT OSS 120B costs $0.18/M input tokens vs $1.25/M for GPT-5. Context windows: 131K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between GPT OSS 120B and GPT-5
GPT OSS 120B is made by openai while GPT-5 is from openai. GPT OSS 120B has a 131K token context window compared to GPT-5's 400K. On pricing, GPT OSS 120B costs $0.18/M input tokens vs $1.25/M for GPT-5. In community voting, In 21 community votes, GPT-5 wins 87% of head-to-head duels.
In 21 community votes, GPT-5 wins 87% of head-to-head duels. GPT-5 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 21+ human preference judgments for this pair.
Web Design: GPT-5 wins 78% of votes
Image Generation: GPT-5 wins 100% of votes
Our Verdict
GPT-5Winner
GPT OSS 120BRunner-up
Pick GPT-5. In 21 blind votes, GPT-5 wins 87% of the time. That's not luck.
GPT-5 particularly excels in Image Generation, Web Design. GPT OSS 120B is 13x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
98%
GPT OSS 120B uses 15.4x more emoji
GPT OSS 120B
GPT-5
52%Vocabulary65%
19wSentence Length13w
0.28Hedging0.20
7.4Bold0.2
1.8Lists4.6
0.15Emoji0.00
0.73Headings0.16
0.17Transitions0.03
Based on 21 + 16 text responses
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