Gemini 3.8 Flash vs GPT Image 2.5 Dev

Google Gemini 3.8 FlashOpenAI GPT Image 2.5 Dev
VendorGoogleOpenAI
Context window1,048,576—
Max output65,536—
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, image, video, audio, filetext, image
Outputtextimage
Released2026-09-012026-09-08