Grok 4.7 vs Gemini 3.1 Pro Preview

xAI Grok 4.7Google Gemini 3.1 Pro Preview
VendorxAIGoogle
Context window500,0001,048,576
Max output—65,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, video, audio, file
Outputtexttext
Released2026-09-212026-02-19