Claude Opus 4.1 vs Grok 4.20 Multi-Agent

Anthropic Claude Claude Opus 4.1xAI Grok 4.20 Multi-Agent
VendorAnthropic ClaudexAI
Context window200,0002,048,000
Max output32,0001,000,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image
Outputtexttext
Released2025-08-052026-03-08