import * as z from "zod/v3";
import { Result as SafeParseResult } from "../../types/fp.js";
import { SDKValidationError } from "../errors/sdkvalidationerror.js";
/**
 * A stored text-to-speech generation.
 */
export type TextToSpeechHistoryObject = {
    /**
     * Unique identifier for the history item.
     */
    id: string;
    /**
     * The object type, always 'speech.tts'.
     */
    object: "speech.tts";
    /**
     * The input text that was synthesized.
     */
    text: string;
    /**
     * The requested language ('auto' or an ISO 639-1 code).
     */
    language: string;
    /**
     * The language actually used for synthesis.
     */
    detectedLanguage: string | null;
    /**
     * The TTS model used.
     */
    model: string;
    /**
     * The provider that produced the audio.
     */
    providerId: string | null;
    /**
     * Audio format of the stored output (wav, mp3, or pcm).
     */
    format: string;
    /**
     * Size of the generated audio in bytes.
     */
    audioBytes: number;
    /**
     * Number of characters in the input text.
     */
    characters: number;
    /**
     * Whether the audio was produced via the streaming endpoint.
     */
    streaming: boolean;
    /**
     * Arbitrary metadata stored with the item.
     */
    metadata: {
        [k: string]: any;
    };
    /**
     * Unix timestamp (seconds) when the item was created.
     */
    createdAt: number;
};
/** @internal */
export declare const TextToSpeechHistoryObject$inboundSchema: z.ZodType<TextToSpeechHistoryObject, z.ZodTypeDef, unknown>;
/** @internal */
export type TextToSpeechHistoryObject$Outbound = {
    id: string;
    object: "speech.tts";
    text: string;
    language: string;
    detected_language: string | null;
    model: string;
    provider_id: string | null;
    format: string;
    audio_bytes: number;
    characters: number;
    streaming: boolean;
    metadata: {
        [k: string]: any;
    };
    created_at: number;
};
/** @internal */
export declare const TextToSpeechHistoryObject$outboundSchema: z.ZodType<TextToSpeechHistoryObject$Outbound, z.ZodTypeDef, TextToSpeechHistoryObject>;
export declare function textToSpeechHistoryObjectToJSON(textToSpeechHistoryObject: TextToSpeechHistoryObject): string;
export declare function textToSpeechHistoryObjectFromJSON(jsonString: string): SafeParseResult<TextToSpeechHistoryObject, SDKValidationError>;
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