GPT-5 vs GPT OSS 120B
Compare GPT-5 and GPT OSS 120B, both from OpenAI, in 25 community votes, gpt-5 wins 82% of head-to-head duels, context windows of 400K vs 131K, tested across 52 shared challenges. Updated June 2026.
Which is better, GPT-5 or GPT OSS 120B?
GPT-5 is the better choice overall, winning 82% of 25 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 400K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 and GPT OSS 120B
GPT-5 is made by openai while GPT OSS 120B is from openai. GPT-5 has a 400K token context window compared to GPT OSS 120B's 131K. On pricing, GPT-5 costs $1.25/M input tokens vs $0.18/M for GPT OSS 120B. In community voting, In 25 community votes, GPT-5 wins 82% of head-to-head duels.
In 25 community votes, GPT-5 wins 82% of head-to-head duels. GPT-5 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 25+ human preference judgments for this pair.
Per 1M tokens
GPT OSS 120B is cheaper on both — 6.9× input, 13× output
Pick GPT-5. In 25 blind votes, GPT-5 wins 82% 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.
Style Comparison
GPT OSS 120B uses 15.4x more emoji
