/**
 * ACE-TUI Telemetry
 *
 * Token counting, throughput measurement, and cost estimation.
 */
export interface TelemetrySnapshot {
    tokensIn: number;
    tokensOut: number;
    totalTokens: number;
    tokensPerSec: number;
    requestCount: number;
    avgLatencyMs: number;
    costEstimate: number;
    uptime: number;
    modelName: string;
    contextUsed: number;
    contextMax: number;
}
export interface RequestTelemetry {
    startTime: number;
    endTime: number;
    promptTokens: number;
    completionTokens: number;
    model: string;
}
export declare class TelemetryTracker {
    private tokensIn;
    private tokensOut;
    private requestCount;
    private totalLatencyMs;
    private startTime;
    private model;
    private contextMax;
    private contextUsed;
    private recentTokens;
    private windowMs;
    constructor();
    /** Record a completed request */
    recordRequest(telemetry: RequestTelemetry): void;
    /** Record incremental tokens (for streaming) */
    recordTokens(input: number, output: number): void;
    /** Update context window info */
    setContext(used: number, max: number): void;
    setModel(name: string): void;
    /** Get current snapshot */
    getSnapshot(): TelemetrySnapshot;
    /** Reset all counters */
    reset(): void;
    private pruneWindow;
    private calculateThroughput;
    /** Estimate cost — Ollama is free, but show equivalent cloud cost for reference */
    private estimateCost;
}
/** Rough token count estimation (for when Ollama doesn't return counts) */
export declare function estimateTokenCount(text: string): number;
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