Gemini 3.5 Transcribe now available on AI Gateway
Gemini 3.5 Transcribe hits GA on AI Gateway—85+ languages, live streaming, custom vocabulary.

Why it matters
Google expands its transcription capability to the broader API ecosystem with streaming support and cost tracking, making speech-to-text accessible to practitioners building with AI Gateway's unified API layer.
The key facts
18 to knowGemini 3.5 Transcribe now available on Google's AI Gateway
Supports 85+ languages with auto-detection and mid-conversation language switching
Two variants: transcribe (batch) and transcribe-live (streaming via WebSocket)
Custom vocabulary support for names, jargon, and spellings
AI SDK V7 adds streaming transcription via socket
AI Gateway provides unified API, usage tracking, failover, routing rules, custom reporting, budgets
No platform markup—reflects provider pricing only
BYOK (Bring Your Own Key) requests supported
Browser demo available at Gemini 3.5 Transcribe Live
Gemini 3.5 Transcribe available on AI Gateway (unified API platform)
Two variants: batch transcription (single request) and live streaming (WebSocket, real-time updates)
Supports 85+ languages with automatic language detection
Handles mid-stream language switching
Custom vocabulary support for names, jargon, spellings
Streaming transcription new in AI SDK V7
AI Gateway provides usage tracking, cost monitoring, failover, performance optimization
No platform markup or inference fees; reflects Google provider pricing
Browser-based demo available (Gemini 3.5 Transcribe Live)
Go to the source
Vercel Blogvercel.com
Publisher excerpt: from Google is now available on AI Gateway. It takes audio and returns text, in two variants:Gemini 3.5 Transcribe The model detects the language on its own, covers 85+, and follows a speaker who switches language partway through. You can also supply custom vocabulary so it recognizes names,…