gpt-5-nano vs Gemini 3.1 Pro Preview

OpenAI gpt-5-nanoGoogle Gemini 3.1 Pro Preview
VendorOpenAIGoogle
Context window400,0001,048,576
Max output128,00065,536
ReasoningYesYes
Tool callingYesYes
File inputYesYes
Inputtext, imagetext, image, video, audio, file
Outputtexttext
Released2025-08-072026-02-19