Gemini 2.5 Pro Preview 06-05 vs o1
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against o1 by OpenAI, context windows of 1.0M vs 128K, tested across 44 shared challenges. Updated May 2026.
Which is better, Gemini 2.5 Pro Preview 06-05 or o1?
Gemini 2.5 Pro Preview 06-05 and o1 are both competitive models. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $15/M for o1. Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Pro Preview 06-05 and o1
Gemini 2.5 Pro Preview 06-05 is made by google while o1 is from openai. Gemini 2.5 Pro Preview 06-05 has a 1049K token context window compared to o1's 128K. On pricing, Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens vs $15/M for o1.
Per 1M tokens
Gemini 2.5 Pro Preview 06-05 is cheaper on both — 12× input, 6.0× output
No community votes yet. On paper, Gemini 2.5 Pro Preview 06-05 has the edge — bigger model tier, newer, bigger context window.
Gemini 2.5 Pro Preview 06-05 is 6.0x cheaper per token — worth considering if cost matters.
Style Comparison
o1 uses 7.8x more transitions
