/**
 * Cost estimator — live pricing from OpenRouter (primary) + LiteLLM (fallback)
 * with a 24h localStorage cache and a hardcoded offline fallback.
 *
 * Data sources:
 *   • https://openrouter.ai/api/v1/models (367+ models, CORS-clean, USD/token)
 *   • https://raw.githubusercontent.com/BerriAI/litellm/main/model_prices_and_context_window.json
 *     (2700+ entries, CORS-clean, input_cost_per_token/output_cost_per_token)
 *
 * Normalization: Bedrock IDs like `global.anthropic.claude-opus-4-7` are
 * stripped of the region/profile prefix before matching.
 */
type PriceRow = {
    input: number;
    output: number;
    context?: number;
};
/** Boot the price table: cache → immediate; network → 24h refresh. */
declare function initPricing(): void;
/** Estimate USD cost for a turn. */
declare function estimateCost(model: string, inputTokens: number, outputTokens: number): number;
/** Get the context window size for a model (defaults to 128k). */
declare function getContextWindow(model: string): number;
declare function formatCost(usd: number): string;
/** Return per-1M-token input/output prices (for display, e.g. Settings tab). */
declare function getPriceRow(model: string): PriceRow;
/** Force-refresh the pricing table (skips cache). Useful for "Update" buttons. */
declare function forceRefreshPricing(): Promise<void>;
/** Is the pricing table ready to answer lookups? */
declare function isPricingReady(): boolean;
/** How many entries are in the live table (useful for diagnostics). */
declare function getPricingEntryCount(): number;

export { estimateCost, forceRefreshPricing, formatCost, getContextWindow, getPriceRow, getPricingEntryCount, initPricing, isPricingReady };