Gemini 2.5 Pro (I/O Edition) vs o3 Mini
Compare Gemini 2.5 Pro (I/O Edition) by Google AI against o3 Mini by OpenAI, tested across 41 shared challenges. Updated April 2026.
Which is better, Gemini 2.5 Pro (I/O Edition) or o3 Mini?
Gemini 2.5 Pro (I/O Edition) and o3 Mini are both competitive models. Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens vs $1.1/M for o3 Mini. Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Pro (I/O Edition) and o3 Mini
Gemini 2.5 Pro (I/O Edition) is made by google while o3 Mini is from openai. On pricing, Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens vs $1.1/M for o3 Mini.
No community votes yet. On paper, Gemini 2.5 Pro (I/O Edition) has the edge — bigger model tier, newer.
Style Comparison
o3 Mini uses 31.8x more transitions
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.
