kimi-k2-0711-preview vs GPT-5

Moonshot kimi-k2-0711-previewOpenAI GPT-5
VendorMoonshotOpenAI
Context window131,072400,000
Max output131,072128,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtexttext, image
Outputtexttext
Released2025-07-112025-08-07