import { BaseProvider, type ProviderConfig, type ProviderRequest, type ProviderResponse } from "../types";
export declare class GeminiProvider extends BaseProvider {
    private readonly apiKey;
    private readonly baseUrl;
    constructor(config: ProviderConfig);
    protected getNativeBaseUrl(): string;
    execute(request: ProviderRequest): Promise<ProviderResponse>;
    /**
     * Execute via Portkey gateway
     */
    private executeViaPortkey;
    /**
     * Execute directly to Gemini (original behavior)
     */
    private executeDirect;
    /**
     * Estimate token count (rough approximation: 1 token ≈ 4 characters)
     */
    private estimateTokenCount;
}
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