gpt-4o-image vs Nano Banana 2 (Gemini 3.1 Flash Image 🍌)

OpenAI gpt-4o-imageGoogle Nano Banana 2 (Gemini 3.1 Flash Image 🍌)
VendorOpenAIGoogle
Context window65,536
Max output32,768
ReasoningNoYes
Tool callingNoNo
File inputNoYes
Inputtexttext, image
Outputimage, textimage
Released2026-05-27