GPT-5.2 vs gemini-2.5-pro

OpenAI GPT-5.2Google gemini-2.5-pro
VendorOpenAIGoogle
Context window400,0001,048,576
Max output128,00065,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, audio, video, file
Outputtexttext
Released2025-12-112025-03-20