/** A provider-qualified or provider-relative model reference. */
export interface ModelRef {
    provider?: string | undefined;
    model: string;
}
/** Parse `model`, `provider/model`, or `provider model`. */
export declare function parseModelRef(ref: string): ModelRef;
export declare function formatModelRef(ref: ModelRef, defaultProvider?: string | undefined): string;
export declare function normalizeModelRef(ref: string, defaultProvider?: string | undefined): string;
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