Gemini 2.5 Pro Preview 06-05 vs GPT-5.5
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against GPT-5.5 by OpenAI, context windows of 1.0M vs 1.1M, tested across 44 shared challenges. Updated April 2026.
Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-5.5?
Gemini 2.5 Pro Preview 06-05 and GPT-5.5 are both competitive models. Gemini 2.5 Pro Preview 06-05 costs $1.25/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 2.5 Pro Preview 06-05 and GPT-5.5
Gemini 2.5 Pro Preview 06-05 is made by google while GPT-5.5 is from openai. Gemini 2.5 Pro Preview 06-05 has a 1049K token context window compared to GPT-5.5's 1050K. On pricing, Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $5/M for GPT-5.5.
Per 1M tokens
Gemini 2.5 Pro Preview 06-05 is cheaper on both — 4.0× input, 3.0× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Pro Preview 06-05 is 3.0x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-5.5 uses 2.4x more hedging
