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Starting March 27, 2026, RC is rebranded as Nexconn. Existing RC SDK customers can continue using this documentation. New customers should refer to the Nexconn developer documentation.

AI Real-time Speech Translation

AI Real-time Speech Translation is an advanced feature built upon AI Real-time Speech Recognition, offering low-latency, high-accuracy text translation across 200+ languages. For supported language codes, see Speech Translation Language Codes.

Universal Use Cases

  • Voice/Video Calls: Break language barriers in cross-border family chats or international business negotiations with real-time translation that feels like native conversation.
  • Multilingual Meetings: Boost decision-making efficiency in global team collaborations or academic conferences by delivering presentations in multiple languages simultaneously.
  • Cross-border Live Streaming: Expand audience reach for e-commerce livestreams or cultural content with real-time translation that eliminates geographical and linguistic boundaries.

Prerequisites

AI Real-time Speech Translation is a premium feature of RC RTC SDK. To enable this feature, submit a ticket.

Note

This feature requires AI Real-time Speech Recognition integration and activation before use.

Translation Settings

Configure Translation Display and Bilingual Subtitles options.

Access subtitle settings via the speech recognition UI to toggle between:

  • Translated Text Only: Ideal when you need quick understanding without source language knowledge.
  • Source + Translation: Perfect for scenarios requiring accuracy verification (e.g., business meetings, academic discussions).