/** The aspect ratio of the output image. With `auto`, the model picks an aspect ratio based on the inputs. */
export declare const Gemini3ProImageRequestAspectRatio: {
    readonly Auto: "auto";
    readonly One1: "1:1";
    readonly Two3: "2:3";
    readonly Three2: "3:2";
    readonly Three4: "3:4";
    readonly Four3: "4:3";
    readonly Four5: "4:5";
    readonly Five4: "5:4";
    readonly Nine16: "9:16";
    readonly Sixteen9: "16:9";
    readonly TwentyOne9: "21:9";
};
export type Gemini3ProImageRequestAspectRatio = (typeof Gemini3ProImageRequestAspectRatio)[keyof typeof Gemini3ProImageRequestAspectRatio];