gpt-4o-image vs gpt-5-nano

OpenAI gpt-4o-imageOpenAI gpt-5-nano
VendorOpenAIOpenAI
Context window400,000
Max output128,000
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtexttext, image
Outputimage, texttext
Released2025-08-07