GPT OSS 20B
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GPT OSS 20B vs Grok 3
Compare GPT OSS 20B by OpenAI against Grok 3 by xAI, in 16 community votes, grok 3 wins 62% of head-to-head duels, context windows of 131K vs 128K, tested across 28 shared challenges. Updated March 2026.
Which is better, GPT OSS 20B or Grok 3?
Grok 3 is the better choice overall, winning 62% of 16 blind community votes on Rival. Context windows: 131K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT OSS 20B and Grok 3
GPT OSS 20B is made by openai while Grok 3 is from xai. GPT OSS 20B has a 131K token context window compared to Grok 3's 128K. In community voting, In 16 community votes, Grok 3 wins 62% of head-to-head duels.
In 16 community votes, Grok 3 wins 62% of head-to-head duels. GPT OSS 20B leads in Analysis, while Grok 3 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 16+ human preference judgments for this pair.
Web Design: Grok 3 wins 100% of votes
Reasoning: GPT OSS 20B and Grok 3 are tied
Image Generation: Grok 3 wins 100% of votes
Analysis: GPT OSS 20B wins 100% of votes
Our Verdict
Grok 3Winner
GPT OSS 20BRunner-up
Pick Grok 3. In 16 blind votes, Grok 3 wins 62% of the time. That's not luck.
Pick GPT OSS 20B for Analysis. Pick Grok 3 for Web Design, Image Generation.
Clear winner
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