GPT-6 Sol vs gemini-2.5-pro

OpenAI GPT-6 SolGoogle gemini-2.5-pro
VendorOpenAIGoogle
Context window1,050,0001,048,576
Max output128,00065,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, audio, video, file
Outputtexttext
Released2026-09-222025-03-20