Gemini 3 Flash Preview vs GPT OSS 120B

Compare Gemini 3 Flash Preview by Google AI against GPT OSS 120B by OpenAI, in 1 community votes, gemini 3 flash preview wins 100% of head-to-head duels, context windows of 1.0M vs 131K, tested across 49 shared challenges. Updated April 2026.

Which is better, Gemini 3 Flash Preview or GPT OSS 120B?

Gemini 3 Flash Preview is the better choice overall, winning 100% of 1 blind community votes on Rival. Gemini 3 Flash Preview costs $0.5/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 1049K vs 131K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 3 Flash Preview and GPT OSS 120B

Gemini 3 Flash Preview is made by google while GPT OSS 120B is from openai. Gemini 3 Flash Preview has a 1049K token context window compared to GPT OSS 120B's 131K. On pricing, Gemini 3 Flash Preview costs $0.5/M input tokens vs $0.18/M for GPT OSS 120B. In community voting, In 1 community votes, Gemini 3 Flash Preview wins 100% of head-to-head duels.

In 1 community votes, Gemini 3 Flash Preview wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
Gemini 3 Flash Preview
Gemini 3 Flash PreviewWinner
GPT OSS 120B
GPT OSS 120BRunner-up

Pick Gemini 3 Flash Preview. In 1 blind votes, Gemini 3 Flash Preview wins 100% of the time. That's not luck.

GPT OSS 120B is 3.8x cheaper per token — worth considering if cost matters.

Clear winner
Writing DNA

Style Comparison

Similarity
99%

GPT OSS 120B uses 15.4x more emoji

Gemini 3 Flash Preview
GPT OSS 120B
55%Vocabulary52%
18wSentence Length19w
0.42Hedging0.28
7.1Bold7.4
4.5Lists1.8
0.00Emoji0.15
0.84Headings0.73
0.07Transitions0.17
Based on 24 + 21 text responses
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Gemini 3 Flash PreviewGPT OSS 120B

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