Gemini 3.1 Pro Preview vs GPT-4o mini
Compare Gemini 3.1 Pro Preview by Google AI against GPT-4o mini by OpenAI, context windows of 1.0M vs 128K, tested across 53 shared challenges. Updated April 2026.
Which is better, Gemini 3.1 Pro Preview or GPT-4o mini?
Gemini 3.1 Pro Preview and GPT-4o mini are both competitive models. Gemini 3.1 Pro Preview costs $2/M input tokens vs $0.15/M for GPT-4o mini. Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 3.1 Pro Preview and GPT-4o mini
Gemini 3.1 Pro Preview is made by google while GPT-4o mini is from openai. Gemini 3.1 Pro Preview has a 1049K token context window compared to GPT-4o mini's 128K. On pricing, Gemini 3.1 Pro Preview costs $2/M input tokens vs $0.15/M for GPT-4o mini.
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — bigger model tier, newer, bigger context window.
GPT-4o mini is 20x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-4o mini uses 2.9x more hedging
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.
