Gemini Transcribe 3.5

Release Summary

Google's most precise speech-to-text model yet, succeeding Chirp 3 for live captioning, voice agents, and file transcription. File API gemini-3.5-transcribe adds speaker attribution and word-level timestamps; Live API gemini-3.5-transcribe-live streams with sub-second latency. Published results show 4.0% WER streaming and 2.6% non-streaming; FLEURS top-locale streaming WER is 5.50% versus 7.32% for Chirp 3. Supports 85+ languages, custom vocabulary, and filler-word cleanup. Public preview in Google AI Studio, Antigravity, and Gemini Enterprise. File pricing $2/M audio input and $12/M text output (about $0.005/min); live is $3.50/$21 (about $0.009/min).

Timeline