export declare const REALTIME_MODELS: readonly ["gpt-realtime-2.1", "gpt-realtime-2.1-mini"];
export type KnownRealtimeModel = (typeof REALTIME_MODELS)[number];
export type RealtimeModel = KnownRealtimeModel | (string & {});
export declare const DEFAULT_MODEL: KnownRealtimeModel;
export declare const TRANSCRIPTION_MODELS: readonly ["gpt-realtime-whisper"];
export type KnownRealtimeTranscriptionModel = (typeof TRANSCRIPTION_MODELS)[number];
export type RealtimeTranscriptionModel = KnownRealtimeTranscriptionModel | (string & {});
export declare const DEFAULT_TRANSCRIPTION_MODEL: KnownRealtimeTranscriptionModel;
export declare const DEFAULT_REALTIME_WS_URL = "wss://api.openai.com/v1/realtime";
export declare const DEFAULT_CLIENT_SECRETS_URL = "https://api.openai.com/v1/realtime/client_secrets";
export declare const DEFAULT_REALTIME_CALLS_URL = "https://api.openai.com/v1/realtime/calls";
export declare const AUDIO_SAMPLE_RATE = 24000;
export declare const CONNECT_TIMEOUT_MS = 10000;
export declare const MAX_PAYLOAD_BYTES: number;
export declare function isKnownRealtimeModel(model: string): model is KnownRealtimeModel;
export declare function isKnownRealtimeTranscriptionModel(model: string): model is KnownRealtimeTranscriptionModel;
/** @deprecated Models are extensible; use isKnownRealtimeModel for catalog checks. */
export declare const isRealtimeModel: typeof isKnownRealtimeModel;
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