Grok 4.20 vs Doubao-Seedream-5.0-pro

xAI Grok 4.20ByteDance Doubao-Seedream-5.0-pro
VendorxAIByteDance
Context window1,000,000—
Max output——
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, imagetext, image
Outputtextimage
Released2026-03-092026-07-08