New Gemini Audio models for developers
Gemini 3.5 Transcribe: Convert streamed speech to text
Real-time speech understanding is critical for voice-first interfaces. Last month, we released Gemini 3.5 Transcribe for low-latency transcription with high precision, achieving a 4.0% WER, and useful features:
- Automatic code-switching: Handle intra-sentence and inter-sentential code- and language-switching without manual configuration
- Custom vocabulary biasing: Steer speech recognition toward domain-specific terms, uncommon jargon, company names, and proper nouns by passing a custom_vocabulary list of up to 1,000 terms
- Smart transcription mode: Deliver polished, reader-ready transcripts with structured formatting, self-corrections, and disfluency removal that eliminates filler words
3.5 Transcribe supports 85+ languages and provides a strong listening engine for voice experiences and stateless tasks like sub-second captioning, call center agents, and real-time audio analytics. You can also access the model via the Interactions API to transcribe audio files up to 1 hour long with structured timestamps and speaker labeling. Read our developer guide to learn more.
