# Gemini 3.8 text-to-speech says hello

The two text-to-speech models offer prompt-driven voice design across 100+ languages, 30-second voice replication with verbal consent checks, and line-by-line performance direction.

- Gemini 3.8 Flash TTS focuses on creative character direction, while Flash-Lite TTS is optimized for cost-efficient, high-volume dubbing and voice agents.
- Features include two-speaker script staging, long-form generation with minimal drift, and scripted non-verbal cues like laughs and gasps.
- Voice replication requires a matching verbal consent recording and embeds SynthID watermarks alongside C2PA credentials in generated audio.
- Available immediately in Google AI Studio and the Gemini API, alongside integrations in Gemini Notebook and Google Vids.

## Why it matters

Developers and creators can now design custom synthetic voices from text prompts or clone voices with built-in consent verification.

## Sources

- [Google DeepMind: Gemini 3.8 text-to-speech says hello](https://deepmind.google/blog/say-hello-to-gemini-38-text-to-speech)

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Summarized by dstilled on 2026-09-23. https://dstilled.ai/story/a7d99430-b49e-430b-b26d-29530edc74ae