Gemini 3.5 Flash vs gpt-4o-image

Google Gemini 3.5 FlashOpenAI gpt-4o-image
VendorGoogleOpenAI
Context window1,048,576
Max output65,536
ReasoningYesNo
Tool callingYesNo
File inputYesNo
Inputtext, image, video, audio, filetext
Outputtextimage, text
Released2026-05-19