Multilingual streaming with Universal-3 Pro: Native code switching across 6 languages
Blog post from AssemblyAI
Universal-3 Pro is a multilingual speech-to-text API that processes audio containing multiple languages in real-time, featuring native code-switching across six languages (English, Spanish, French, German, Italian, and Portuguese) and speaker diarization capabilities. This API stands out from traditional systems by seamlessly handling mid-sentence language switches without requiring separate API calls for each language, thus maintaining transcription flow and context. Universal-3 Pro uses a unified model that recognizes multiple languages simultaneously, maintaining speaker identity even when language changes occur, and providing low-latency, high-accuracy transcripts suitable for high-volume applications like call centers. The API also supports cross-language custom vocabulary prompting to improve recognition of domain-specific terms across all supported languages, making it suitable for global voice applications. The API's design ensures that regional accents and code-switching patterns are accurately captured, which is crucial for real-world multilingual conversations.
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