Разные группы токенов имеют разные цены. Единица: млн токенов (M)
/v1/chat/completionsPOST/v1/images/generationsPOST/v1/images/editsPOST/v1beta/models/gemini-3.1-flash-image-2k:generateContentPOSTGemini 3.1 Flash Image is a more efficient image generation version, optimized for speed and high-usage developer scenarios, with significantly reduced pricing. It also supports a 0.5k (512) resolution and adds new image aspect ratios: 1:4, 4:1, 1:8, and 8:1.