/**
 * Configuration for a GGUF embedding model loaded via node-llama-cpp.
 */
export interface ModelConfig {
    /** Model URI (hf: URIs supported) or local file path */
    uri: string;
    /** The dimension of embeddings produced by this model */
    dimension: number;
    /** Maximum tokens embedded per text; longer text is truncated (default: 500) */
    maxTokens?: number;
}
export interface ResolvedModelConfig extends ModelConfig {
    maxTokens: number;
}
/**
 * Built-in embedding model presets.
 * bge-small-en is English-only; use bge-m3 for multilingual content.
 */
export declare const modelPresets: {
    readonly 'bge-small-en': {
        readonly uri: "hf:CompendiumLabs/bge-small-en-v1.5-gguf/bge-small-en-v1.5-q8_0.gguf";
        readonly dimension: 384;
        readonly maxTokens: 500;
    };
    readonly 'bge-m3': {
        readonly uri: "hf:gpustack/bge-m3-GGUF/bge-m3-Q8_0.gguf";
        readonly dimension: 1024;
        readonly maxTokens: 8000;
    };
};
export type ModelPresetName = keyof typeof modelPresets;
/**
 * Model selection: a built-in preset name or a custom GGUF model config.
 */
export type ModelOption = ModelPresetName | ModelConfig;
export declare const modelPresetNames: ModelPresetName[];
export declare function isModelPresetName(value: string): value is ModelPresetName;
export declare function resolveModelConfig(model?: ModelOption): ResolvedModelConfig;
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