o1 vs Gemini 2.5 Pro (I/O Edition)
Compare o1 by OpenAI against Gemini 2.5 Pro (I/O Edition) by Google AI, tested across 30 shared challenges. Updated March 2026.
Which is better, o1 or Gemini 2.5 Pro (I/O Edition)?
o1 and Gemini 2.5 Pro (I/O Edition) are both competitive models. o1 costs $15/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition). Compare their real outputs side by side below.
Key Differences Between o1 and Gemini 2.5 Pro (I/O Edition)
o1 is made by openai while Gemini 2.5 Pro (I/O Edition) is from google. On pricing, o1 costs $15/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition).
No community votes yet. On paper, Gemini 2.5 Pro (I/O Edition) has the edge — bigger model tier, newer.
Gemini 2.5 Pro (I/O Edition) is 6.0x cheaper per token — worth considering if cost matters.
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