gpt-4-gizmo-* vs Gemini 3.5 Flash

OpenAI gpt-4-gizmo-*Google Gemini 3.5 Flash
VendorOpenAIGoogle
Context window—1,048,576
Max output—65,536
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtext, imagetext, image, video, audio, file
Outputtexttext
Released—2026-05-19