/**
 * @fileoverview Tokenizer implementation for OpenAI GPT models.
 *
 * This module provides a tokenizer implementation for OpenAI GPT models
 * using the gpt-tokenizer library.
 */
import { Tokenizer } from './baseTokenizer';
/**
 * Tokenizer for OpenAI GPT models
 */
export declare class GPTTokenizer implements Tokenizer {
    private modelPatterns;
    /**
     * Count the number of tokens in a text using the GPT tokenizer
     * @param text Text to count tokens for
     * @returns Actual token count
     */
    countTokens(text: string): number;
    /**
     * Get the model name for this tokenizer
     * @returns 'gpt'
     */
    getModelName(): string;
    /**
     * Check if this tokenizer supports a given model
     * @param modelName Name of the model to check
     * @returns True if the model is supported, false otherwise
     */
    supportsModel(modelName: string): boolean;
}