Claude Sonnet 5 vs Grok 4.20 Multi-Agent

Anthropic Claude Sonnet 5xAI Grok 4.20 Multi-Agent
VendorAnthropicxAI
Context window1,000,0002,048,000
Max output128,0001,000,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image
Outputtexttext
Released2026-06-292026-03-08