import type { ChatCompletionOptions, ChatCompletionResult, LLMProvider } from '../types.js';
declare const DEFAULT_GEMINI_BASE_URL = "https://generativelanguage.googleapis.com/v1beta";
export interface GeminiAdapterConfig {
    apiKey?: string;
    baseUrl?: string;
    defaultModel?: string;
    maxOutputTokens?: number;
    temperature?: number;
    safetySettings?: Array<{
        category: string;
        threshold: string;
    }>;
}
export declare function isNativeGeminiBaseUrl(baseUrl: string): boolean;
export declare function probeGeminiTier(apiKey: string, baseUrl?: string, model?: string): Promise<'free' | 'paid' | 'unknown'>;
declare function sanitizeGeminiParameters(params: Record<string, unknown>): Record<string, unknown>;
export declare class GeminiAdapter implements LLMProvider {
    private apiKey;
    private baseUrl;
    private defaultModel;
    private maxOutputTokens?;
    private temperature?;
    private safetySettings;
    constructor(config?: GeminiAdapterConfig);
    private buildRequestUrl;
    private buildRequestBody;
    chat(options: ChatCompletionOptions): Promise<ChatCompletionResult>;
    chatStream(options: ChatCompletionOptions): AsyncIterable<string>;
}
export { DEFAULT_GEMINI_BASE_URL, sanitizeGeminiParameters };
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