gpt-4o-image vs Gemini 3.5 Flash

OpenAI gpt-4o-imageGoogle Gemini 3.5 Flash
VendorOpenAIGoogle
Context window1,048,576
Max output65,536
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtexttext, image, video, audio, file
Outputimage, texttext
Released2026-05-19