import { openai as _openai } from "@ai-sdk/openai";
import { AISDKLanguageModel } from "../language-model.js";
import type { OpenAIOAuthCredentials } from "../oauth/types.js";
/**
 * OpenAI model IDs (derived from @ai-sdk/openai).
 */
export type OpenAIModelId = Parameters<typeof _openai>[0];
/**
 * Options for creating a custom OpenAI provider.
 */
export interface OpenAIProviderOptions {
    /** API key for standard authentication */
    apiKey?: string;
    /** OAuth credentials for ChatGPT Plus/Pro (Codex) authentication */
    oauth?: OpenAIOAuthCredentials;
    /** Custom base URL (ignored for OAuth - uses Codex endpoint) */
    baseURL?: string;
    /** Custom headers */
    headers?: Record<string, string>;
}
/**
 * Create a custom OpenAI provider with explicit credentials.
 *
 * @example API key auth
 * ```ts
 * const openai = createOpenAI({ apiKey: "sk-..." });
 * const model = openai("gpt-4o");
 * ```
 *
 * @example OAuth auth (ChatGPT Plus/Pro via Codex)
 * ```ts
 * const openai = createOpenAI({
 *   oauth: {
 *     accessToken: "...",
 *     refreshToken: "...",
 *     expiresAt: Date.now() + 3600000,
 *     accountId: "...", // for org subscriptions
 *     onRefresh: (tokens) => saveTokens(tokens),
 *   }
 * });
 * const model = openai("gpt-4o");
 * ```
 */
export declare function createOpenAI(options?: OpenAIProviderOptions): (modelId: OpenAIModelId) => AISDKLanguageModel;
/**
 * Create a kernl-compatible OpenAI language model.
 * Uses OPENAI_API_KEY environment variable.
 *
 * @example
 * ```ts
 * import { openai } from '@kernl-sdk/ai/openai';
 *
 * const gpt4 = openai('gpt-4o');
 * const response = await gpt4.generate([...], {});
 * ```
 */
export declare function openai(modelId: OpenAIModelId): AISDKLanguageModel;
export type { OpenAIOAuthCredentials } from "../oauth/types.js";
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