Grok 4.3 vs Gemini 3.5 Flash

xAI Grok 4.3Google Gemini 3.5 Flash
VendorxAIGoogle
Context window2,000,0001,048,576
Max output2,000,00065,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, video, audio, file
Outputtexttext
Released2026-05-012026-05-19