Gemini 3.1 Pro Preview Customtools vs gpt-4

Google Gemini 3.1 Pro Preview CustomtoolsOpenAI gpt-4
VendorGoogleOpenAI
Context window1,048,5768,192
Max output65,5368,192
ReasoningYesNo
Tool callingYesYes
File inputYesYes
Inputtext, image, video, audio, filetext
Outputtexttext
Released2026-02-192023-11-06