gpt-4o-image vs Gemini 3.1 Pro Preview

OpenAI gpt-4o-imageGoogle Gemini 3.1 Pro Preview
VendorOpenAIGoogle
Context window—1,048,576
Max output—65,536
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtexttext, image, video, audio, file
Outputimage, texttext
Released—2026-02-19