Grok Build 0.1 vs Kimi K2.5

xAI Grok Build 0.1Moonshot Kimi K2.5
VendorxAIMoonshot
Context window256,000256,144
Max output—16,384
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, video, file, image
Outputtexttext
Released2026-05-302026-01-27