export type ModelProvider = "openai" | "anthropic" | "gemini" | "unknown";
export declare function detectModelProvider(model: string): ModelProvider;
export declare function countOpenAITokens(text: string): number;
export declare function countAnthropicTokens(text: string): number;
export declare function countGeminiTokens(text: string): number;
export declare function estimateTokens(text: string): number;
export declare function countTokens(text: string, model: string): number;
export declare function isWithinTokenLimit(text: string, limit: number, model: string): number | false;
export interface TokenUsage {
    prompt_tokens: number;
    completion_tokens: number;
    total_tokens: number;
}
export declare function calculateTokenUsage(prompt: string, completion: string, model: string): TokenUsage;