gpt-5-pro vs Gemini 3.1 Flash-Lite

OpenAI gpt-5-proGoogle Gemini 3.1 Flash-Lite
VendorOpenAIGoogle
Context window400,0001,048,576
Max output272,00065,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, audio, video, file
Outputtexttext
Released2025-08-072026-03-02