import { type OpenAICompatibleProviderSettings } from "@ai-sdk/openai-compatible";
import type { LanguageModelV4 } from "@ai-sdk/provider";
export interface CreateOpenRouterSettings extends Omit<OpenAICompatibleProviderSettings, "name" | "baseURL" | "transformRequestBody"> {
    /** OpenRouter API key. Defaults to `process.env.OPENROUTER_API_KEY`. */
    apiKey?: string;
    /** Override the base URL. Defaults to the OpenRouter v1 endpoint. */
    baseURL?: string;
}
/**
 * OpenRouter provider built on `@ai-sdk/openai-compatible`.
 *
 * The `reasoning` option drives OpenRouter's `reasoning.enabled` (boolean) for
 * every level, on or off:
 *  - `reasoning: 'low' | 'medium' | 'high' | …` -> `reasoning.enabled: true`
 *  - `reasoning: 'none'`                         -> `reasoning.enabled: false`
 *
 * @example
 * const openrouter = createOpenRouter();
 * await streamText({ model: openrouter('moonshotai/kimi-k2.5'), reasoning: 'high', prompt: '...' });
 */
export declare function createOpenRouter(settings?: CreateOpenRouterSettings): (modelId: string) => LanguageModelV4;