export interface DailyModelUsage {
    inputTokens: number;
    outputTokens: number;
    calls: number;
}
/** model → DailyModelUsage */
export type DayEntry = Record<string, DailyModelUsage>;
/** YYYY-MM-DD → DayEntry */
export type UsageData = Record<string, DayEntry>;
export interface UsageSummary {
    date: string;
    model: string;
    inputTokens: number;
    outputTokens: number;
    totalTokens: number;
    calls: number;
}
/**
 * Record token usage for a single LLM call.
 * Called by providers after each API call.
 * Also feeds the analytics service for cost tracking.
 */
export declare function recordUsage(model: string, inputTokens: number, outputTokens: number, prompt?: ChatCall['prompt'], response?: string): Promise<void>;
/**
 * Get usage for a specific model over the last N days.
 */
export declare function getModelUsage(model: string, days?: number): Promise<UsageSummary[]>;
/**
 * Get usage for all models over the last N days.
 */
export declare function getAllUsage(days?: number): Promise<UsageSummary[]>;
/**
 * Get daily totals (all models combined) over the last N days.
 */
export declare function getDailyTotals(days?: number): Promise<UsageSummary[]>;
/**
 * Get list of all models that have recorded usage.
 */
export declare function getTrackedModels(): Promise<string[]>;
export interface ChatCall {
    model: string;
    inputTokens: number;
    outputTokens: number;
    costUsd: number;
    prompt?: {
        system?: string;
        messages: {
            role: string;
            content: string;
        }[];
    };
    response?: string;
}
export interface ChatTokenTotals {
    inputTokens: number;
    outputTokens: number;
    totalTokens: number;
    calls: ChatCall[];
}
/**
 * Run an async function with per-chat token tracking.
 * Returns both the function's result and accumulated token totals.
 */
export declare function runWithTokenTracker<T>(fn: () => Promise<T>): Promise<{
    result: T;
    tokens: ChatTokenTotals;
}>;
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