Grok 4.7 vs chatgpt-image-latest

xAI Grok 4.7OpenAI chatgpt-image-latest
VendorxAIOpenAI
Context window500,000—
Max output——
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, imagetext, image
Outputtextimage
Released2026-09-212025-12-16