Grok 4.6 vs Doubao-Seedream-4.5

xAI Grok 4.6ByteDance Doubao-Seedream-4.5
VendorxAIByteDance
Context window500,000—
Max output2,000,000—
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, imagetext, image
Outputtextimage
Released2026-08-132025-09-26