export interface NormalizeModelOptions {
    preserveCustomModels?: boolean;
    acceptsCustomModels?: boolean;
}
export interface ModelEngineConfig {
    name: string;
    label?: string;
    defaultModel: string;
    supportedModels: readonly string[];
    /** Models currently offered in the picker, which may be a user-selected subset. */
    selectableModels?: readonly string[];
    acceptsCustomModels?: boolean;
    preserveCustomModels?: boolean;
}
export declare function findLatestSupportedVersionMatch(candidate: string, supportedModels: readonly string[]): string | undefined;
export declare function upgradeBuilderModelAlias(candidate: string, supportedModels: readonly string[]): string | undefined;
export declare function isNewerVersionedModel(candidate: string, newerModel: string): boolean;
export declare function upgradeModelToLatestSupportedVersion(candidate: string, supportedModels: readonly string[]): string | undefined;
export declare function upgradeModelForProvider(candidate: string, supportedModels: readonly string[], provider: string): string | undefined;
export declare function normalizeModelForEngine(engine: ModelEngineConfig, model: string | null | undefined, options?: NormalizeModelOptions): string;
export declare function getModelOptionLabel(model: string, engine?: ModelEngineConfig, builderFallbackLabel?: string): string;
export declare function getBuilderModelOptionLabel(model: string, builderFallbackLabel?: string): string;