Gemini 3.5 Flash vs GPT-5
Compare Gemini 3.5 Flash by Google AI against GPT-5 by OpenAI, context windows of 1.0M vs 400K, tested across 51 shared challenges. Updated May 2026.
Which is better, Gemini 3.5 Flash or GPT-5?
Gemini 3.5 Flash and GPT-5 are both competitive models. Gemini 3.5 Flash costs $1.5/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 3.5 Flash and GPT-5
Gemini 3.5 Flash is made by google while GPT-5 is from openai. Gemini 3.5 Flash has a 1049K token context window compared to GPT-5's 400K. On pricing, Gemini 3.5 Flash costs $1.5/M input tokens vs $1.25/M for GPT-5.
Per 1M tokens
GPT-5 wins input (1.2× cheaper)·Gemini 3.5 Flash wins output (1.1× cheaper)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Gemini 3.5 Flash uses 23.4x more bold
