kimi-k2-turbo-preview vs gpt-5-pro

Moonshot kimi-k2-turbo-previewOpenAI gpt-5-pro
VendorMoonshotOpenAI
Context window262,144400,000
Max output262,144272,000
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, image, filetext, image
Outputtexttext
Released2025-09-052025-08-07