gpt-3.5-turbo-16k vs Grok 4.20 Multi-Agent

OpenAI gpt-3.5-turbo-16kxAI Grok 4.20 Multi-Agent
VendorOpenAIxAI
Context window16,3852,048,000
Max output4,0961,000,000
ReasoningNoYes
Tool callingYesYes
File inputNoYes
Inputtexttext, image
Outputtexttext
Released2026-03-08