/**
 * pricing.ts — Centralized pricing, context windows, thresholds, and cost calculation
 *
 * Single source of truth for:
 * - Model pricing (USD per 1M tokens)
 * - Known context windows
 * - Context notification thresholds
 * - Default model fallback
 * - Tool token estimates
 *
 * Prices are in USD per million tokens.
 */
export interface ModelPricing {
    input: number;
    output: number;
    cacheRead: number;
    cacheCreate: number;
}
export declare const PRICING: Record<string, ModelPricing>;
export declare const DEFAULT_PRICING: ModelPricing;
export declare const DEFAULT_MODEL = "claude-sonnet-4-6";
/**
 * Known context windows by model ID.
 * To add a new model: add an entry with the model ID as key and context size as value.
 * Fallback for unknown models: 200,000 tokens.
 */
export declare const KNOWN_CONTEXT_WINDOWS: Record<string, number>;
/**
 * Get context window for a model.
 * Priority: config override → KNOWN_CONTEXT_WINDOWS → 200K fallback.
 */
export declare function getContextWindow(model: string): number;
/** Context usage % thresholds for notifications: [50%, 75%, 90%] */
export declare const CONTEXT_THRESHOLDS: readonly [50, 75, 90];
/** Average tokens per tool call type — used when real tokens are unavailable. */
export declare const TOOL_TOKEN_ESTIMATE: Record<string, number>;
export declare function calcCost(model: string, usage: {
    input_tokens: number;
    output_tokens: number;
    cache_read_input_tokens: number;
    cache_creation_input_tokens: number;
}): number;
export declare function estimateTokensFromToolCounts(toolCounts: Record<string, number>): number;
export declare function estimateCost(inputTokens: number, outputTokens: number, model: string): number;
export interface ModelPrice {
    input: number;
    output: number;
}
export declare function findPricing(model: string): ModelPrice | null;