/**
 * Approximate token accounting. Counts via the chars/4 heuristic for all
 * models (v1); precise per-model counting can replace this later.
 */
export declare class TokenCounter {
    countTokens(text: string, _model?: string): number;
    estimateCost(model: string, inputTokens: number, outputTokens: number): number;
    getModelPrice(model: string): import("./modelPricing.ts").ModelPrice;
}
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