Grok 4.7 vs gpt-oss-120b

xAI Grok 4.7OpenAI gpt-oss-120b
VendorxAIOpenAI
Context window500,000131,072
Max output—131,072
ReasoningYesNo
Tool callingYesYes
File inputYesNo
Inputtext, imagetext
Outputtexttext
Released2026-09-21—