grok-3 vs Gemini 3 Flash Preview

xAI grok-3Google Gemini 3 Flash Preview
VendorxAIGoogle
Context window131,0721,048,576
Max output8,19265,536
ReasoningNoYes
Tool callingYesYes
File inputYesYes
Inputtexttext, image, video, audio, file
Outputtexttext
Released2025-02-172025-12-17