Gemma 3 12B
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Gemma 3 12B vs GPT OSS 20B
Compare Gemma 3 12B by Google AI against GPT OSS 20B by OpenAI, in 314 community votes, gpt oss 20b wins 67% of head-to-head duels, tested across 45 shared challenges. Updated April 2026.
Which is better, Gemma 3 12B or GPT OSS 20B?
GPT OSS 20B is the better choice overall, winning 67% of 314 blind community votes on Rival. Gemma 3 12B costs $0.03/M input tokens vs $0.02/M for GPT OSS 20B. Compare their real outputs side by side below.
Key Differences Between Gemma 3 12B and GPT OSS 20B
Gemma 3 12B is made by google while GPT OSS 20B is from openai. On pricing, Gemma 3 12B costs $0.03/M input tokens vs $0.02/M for GPT OSS 20B. In community voting, In 314 community votes, GPT OSS 20B wins 67% of head-to-head duels.
In 314 community votes, GPT OSS 20B wins 67% of head-to-head duels. Gemma 3 12B leads in Conversation, while GPT OSS 20B leads in Reasoning, Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 314+ human preference judgments for this pair.
Reasoning: GPT OSS 20B wins 68% of votes
Web Design: GPT OSS 20B wins 66% of votes
Image Generation: GPT OSS 20B wins 85% of votes
Conversation: Gemma 3 12B wins 60% of votes
Analysis: GPT OSS 20B wins 78% of votes
Our Verdict
GPT OSS 20BWinner
Gemma 3 12BRunner-up
Pick GPT OSS 20B. In 314 blind votes, GPT OSS 20B wins 67% of the time. That's not luck.
Pick Gemma 3 12B for Conversation. Pick GPT OSS 20B for Image Generation, Analysis, Reasoning. Gemma 3 12B is 3.3x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
87%
GPT OSS 20B uses 10.2x more emoji
Gemma 3 12B
GPT OSS 20B
52%Vocabulary54%
17wSentence Length17w
0.66Hedging0.26
6.2Bold5.9
5.4Lists3.3
0.00Emoji0.10
0.06Headings0.75
0.23Transitions0.32
Based on 23 + 21 text responses
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