gpt-4o-image vs Grok 4.20 Multi-Agent

OpenAI gpt-4o-imagexAI Grok 4.20 Multi-Agent
VendorOpenAIxAI
Context window2,048,000
Max output1,000,000
ReasoningNoYes
Tool callingNoYes
File inputNoYes
Inputtexttext, image
Outputimage, texttext
Released2026-03-08