Gemini 2.0 Flash Thinking vs OpenAI o3
Compare Gemini 2.0 Flash Thinking by Google AI against OpenAI o3 by OpenAI, tested across 21 shared challenges. Updated May 2026.
Which is better, Gemini 2.0 Flash Thinking or OpenAI o3?
Gemini 2.0 Flash Thinking and OpenAI o3 are both competitive models. Gemini 2.0 Flash Thinking costs $0.25/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Gemini 2.0 Flash Thinking and OpenAI o3
Gemini 2.0 Flash Thinking is made by google while OpenAI o3 is from openai. On pricing, Gemini 2.0 Flash Thinking costs $0.25/M input tokens vs $10/M for OpenAI o3.
Per 1M tokens
Gemini 2.0 Flash Thinking is cheaper on both — 40× input, 80× output
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer.
Gemini 2.0 Flash Thinking is 80x cheaper per token — worth considering if cost matters.
Style Comparison
OpenAI o3 uses 11.3x more headings
