gpt-4o-image vs Gemini 3 Flash Preview

OpenAI gpt-4o-imageGoogle Gemini 3 Flash Preview
VendorOpenAIGoogle
Context window—1,048,576
Max output—65,536
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtexttext, image, video, audio, file
Outputimage, texttext
Released—2025-12-17