On September 22, 2026 Google announced that its Gemini 3.8 Flash TTS and Gemini 3.8 Flash‑Lite TTS models are now generally available. The flagship Flash model aims for studio‑grade voice quality, regional accents and stable long‑form output, while the Lite version is cheaper and built for high‑throughput or real‑time voice agents. Both are accessed through the new /v1beta/voices endpoint and can create custom vocal personas or replicate consented voices from a library of 150+ options.
Why it matters
The models let developers add realistic, low‑cost voice output to apps, expanding AI‑driven voice assistants and automated narration.
