gpt-4o-image vs Gemini Omni Flash Preview

OpenAI gpt-4o-imageGoogle Gemini Omni Flash Preview
VendorOpenAIGoogle
Context window—65,536
Max output—32,768
ReasoningNoYes
Tool callingNoNo
File inputNoYes
Inputtexttext, image
Outputimage, textvideo
Released—2026-06-30