Gemini 3.1 Pro Preview vs GPT-5.5
Compare Gemini 3.1 Pro Preview by Google AI against GPT-5.5 by OpenAI, context windows of 1.0M vs 1.1M, tested across 53 shared challenges. Updated April 2026.
Which is better, Gemini 3.1 Pro Preview or GPT-5.5?
Gemini 3.1 Pro Preview and GPT-5.5 are both competitive models. Gemini 3.1 Pro Preview costs $2/M input tokens vs $5/M for GPT-5.5. Context windows: 1049K vs 1050K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 3.1 Pro Preview and GPT-5.5
Gemini 3.1 Pro Preview is made by google while GPT-5.5 is from openai. Gemini 3.1 Pro Preview has a 1049K token context window compared to GPT-5.5's 1050K. On pricing, Gemini 3.1 Pro Preview costs $2/M input tokens vs $5/M for GPT-5.5.
Per 1M tokens
Gemini 3.1 Pro Preview is cheaper on both — 2.5× input, 2.5× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Gemini 3.1 Pro Preview uses 4.1x more transitions
