Gemini 2.5 Flash Preview vs GPT-5
Compare Gemini 2.5 Flash Preview by Google AI against GPT-5 by OpenAI, in 2 community votes, gemini 2.5 flash preview and gpt-5 are closely matched, context windows of 1.0M vs 400K, tested across 27 shared challenges. Updated May 2026.
Which is better, Gemini 2.5 Flash Preview or GPT-5?
Gemini 2.5 Flash Preview and GPT-5 are closely matched based on 2 community votes. Gemini 2.5 Flash Preview costs $0.15/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 2.5 Flash Preview and GPT-5
Gemini 2.5 Flash Preview is made by google while GPT-5 is from openai. Gemini 2.5 Flash Preview has a 1049K token context window compared to GPT-5's 400K. On pricing, Gemini 2.5 Flash Preview costs $0.15/M input tokens vs $1.25/M for GPT-5. In community voting, In 2 community votes, Gemini 2.5 Flash Preview and GPT-5 are closely matched.
In 2 community votes, Gemini 2.5 Flash Preview and GPT-5 are closely matched. Gemini 2.5 Flash Preview and GPT-5 perform similarly across challenge categories. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Per 1M tokens
Gemini 2.5 Flash Preview is cheaper on both — 8.3× input, 17× output
Votes are tied. GPT-5 is newer and likely incorporates more recent improvements.
Gemini 2.5 Flash Preview is 17x cheaper per token — worth considering if cost matters.
Style Comparison
Gemini 2.5 Flash Preview uses 21.6x more bold
