Gemini 3.5 Flash vs gpt-5-nano

Google Gemini 3.5 FlashOpenAI gpt-5-nano
VendorGoogleOpenAI
Context window1,048,576400,000
Max output65,536128,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, image, video, audio, filetext, image
Outputtexttext
Released2026-05-192025-08-07