Gemini 1.5 Pro vs o3 Mini
Compare Gemini 1.5 Pro by Google AI against o3 Mini by OpenAI, context windows of 1.0M vs 64K, tested across 19 shared challenges. Updated April 2026.
Which is better, Gemini 1.5 Pro or o3 Mini?
Gemini 1.5 Pro and o3 Mini are both competitive models. Gemini 1.5 Pro costs $3.5/M input tokens vs $1.1/M for o3 Mini. Context windows: 1000K vs 64K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 1.5 Pro and o3 Mini
Gemini 1.5 Pro is made by google while o3 Mini is from openai. Gemini 1.5 Pro has a 1000K token context window compared to o3 Mini's 64K. On pricing, Gemini 1.5 Pro costs $3.5/M input tokens vs $1.1/M for o3 Mini.
No community votes yet. On paper, Gemini 1.5 Pro has the edge — bigger model tier, bigger context window.
Style Comparison
o3 Mini uses 5.8x more headings
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.
