Gemini 3 Flash Preview vs GPT-5
Compare Gemini 3 Flash Preview by Google AI against GPT-5 by OpenAI, context windows of 1.0M vs 400K, tested across 52 shared challenges. Updated June 2026.
Which is better, Gemini 3 Flash Preview or GPT-5?
Gemini 3 Flash Preview and GPT-5 are both competitive models. Gemini 3 Flash Preview costs $0.5/M input tokens vs $1.25/M for GPT-5. Context windows: 1049K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 3 Flash Preview and GPT-5
Gemini 3 Flash Preview is made by google while GPT-5 is from openai. Gemini 3 Flash Preview has a 1049K token context window compared to GPT-5's 400K. On pricing, Gemini 3 Flash Preview costs $0.5/M input tokens vs $1.25/M for GPT-5.
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 3.3x cheaper per token — worth considering if cost matters.
Cost per 1M tokens
Gemini 3 Flash Preview is cheaper on both — 2.5× input, 3.3× output
Style Comparison
Gemini 3 Flash Preview uses 37.7x more bold
