Gemini 3.5 Flash vs GPT Image 2.5 Flare

Google Gemini 3.5 FlashOpenAI GPT Image 2.5 Flare
VendorGoogleOpenAI
Context window1,048,576—
Max output65,536—
ReasoningYesNo
Tool callingYesNo
File inputYesYes
Inputtext, image, video, audio, filetext, image
Outputtextimage
Released2026-05-192026-09-08