Gemini 3 Flash Preview vs OpenAI o3
Compare Gemini 3 Flash Preview by Google AI against OpenAI o3 by OpenAI, tested across 54 shared challenges. Updated June 2026.
Which is better, Gemini 3 Flash Preview or OpenAI o3?
Gemini 3 Flash Preview and OpenAI o3 are both competitive models. Gemini 3 Flash Preview costs $0.5/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Gemini 3 Flash Preview and OpenAI o3
Gemini 3 Flash Preview is made by google while OpenAI o3 is from openai. On pricing, Gemini 3 Flash Preview costs $0.5/M input tokens vs $10/M for OpenAI o3.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 3 Flash Preview is 13x cheaper per token — worth considering if cost matters.
Cost per 1M tokens
Gemini 3 Flash Preview is cheaper on both — 20× input, 13× output
Style Comparison
Gemini 3 Flash Preview uses 10.2x more bold
