Gemini 3.1 Pro Preview vs o3 Mini
Compare Gemini 3.1 Pro Preview by Google AI against o3 Mini by OpenAI, in 2 community votes, gemini 3.1 pro preview wins 100% of head-to-head duels, context windows of 1.0M vs 64K, tested across 53 shared challenges. Updated April 2026.
Which is better, Gemini 3.1 Pro Preview or o3 Mini?
Gemini 3.1 Pro Preview is the better choice overall, winning 100% of 2 blind community votes on Rival. Gemini 3.1 Pro Preview costs $2/M input tokens vs $1.1/M for o3 Mini. Context windows: 1049K vs 64K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 3.1 Pro Preview and o3 Mini
Gemini 3.1 Pro Preview is made by google while o3 Mini is from openai. Gemini 3.1 Pro Preview has a 1049K token context window compared to o3 Mini's 64K. On pricing, Gemini 3.1 Pro Preview costs $2/M input tokens vs $1.1/M for o3 Mini. In community voting, In 2 community votes, Gemini 3.1 Pro Preview wins 100% of head-to-head duels.
In 2 community votes, Gemini 3.1 Pro Preview wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Pick Gemini 3.1 Pro Preview. In 2 blind votes, Gemini 3.1 Pro Preview wins 100% of the time. That's not luck.
Style Comparison
o3 Mini uses 2.7x more transitions
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
