Gemini 3.8 Flash TTS
Gemini 3.8 Flash TTS gives you line-by-line control over emotion, pacing and accent — craft a voice from a prompt and produce audio in 130 languages.
Support
Pro AI Tools
Explore elite tools including the Suno AI Music Generator.
MiniMax H3
MiniMax H3 AI Video Generator
Seedance 2.5
The Future of AI Video Is Here.
Seedance 2.0
The Future of AI Video Is Here.
FLUX 3 Video Generator
Kling 3.0
Next-Gen AI Video Generator
Grok Video Generator
Create Videos from Text or Images with AI
MiniMax H3 video generator
MiniMax H3 AI Video Generator
Seedance 2.0
The Future of AI Video Is Here.
Why the Gemini 3.8 Flash TTS Release Matters for Voice Teams
Google's 2026 rollout places Gemini 3.8 Flash TTS as the expressive creative option, with a lighter sibling handling bulk, cost-sensitive audio.
- A Creative Flagship and a Volume WorkhorseGemini 3.8 Flash TTS handles nuance-rich creative work, while Flash-Lite TTS covers cheaper, high-volume speech at scale.
- Steer the Performance Instead of Choosing a PresetPer-turn style notes, structured speech metadata and inline vocal events shape tone, timing, feeling and accent.
- Design a Voice, or Clone One With ConsentDescribe the voice you want in plain words, or mirror a real speaker using a reference clip plus a matching consent file.
How to Get Better Results From Gemini 3.8 Flash TTS
Four habits that keep your transcript clean and let the performance metadata do the directing.
What Gemini 3.8 Flash TTS Can Actually Do
Performance direction, voice design, safeguards and language reach — a closer look at the flagship model's full toolkit.
Emotion Control Turn by Turn
Per-turn styling with inline laughs, sighs, coughs, breaths and pauses feels like coaching a performer rather than picking a preset.
Describe a Voice in Plain Words
Prompts can specify age, character, accent, vocal texture and role, with 2,000+ production voices reachable through the Voices endpoint.
Cloning That Requires Consent
You need a clean reference sample and a matching consent clip from the same adult voice, plus SynthID watermarking and C2PA credentials.
Built-In Two-Person Dialogue
Write the exchange once and it works for podcasts, lessons, product walkthroughs and game scenes — no manual line splicing.
Stable Voice Across Long Recordings
Google reports consistent identity, timbre, loudness and room tone over multi-minute narration and extended dialogue.
130 Languages With Regional Accents
Gemini 3.8 Flash TTS reaches 130 languages versus Flash-Lite's 101, including regional accents, minority dialects and IPA overrides.
Gemini 3.8 Flash TTS: Frequently Asked Questions
Quick answers about pricing, which tier to pick, benchmark scores and the safety rules behind Gemini 3.8 Flash TTS.
What does Gemini 3.8 Flash TTS cost per minute of audio?
Roughly 1.35 cents per audio minute, based on launch pricing of $0.50 per million input tokens and $9 per million output tokens.
When should I choose Flash TTS over Flash-Lite TTS?
Reach for Flash TTS when acting nuance or long-form audio matters; Flash-Lite TTS suits bulk jobs and low-latency needs.
How does it score against rival voice models?
Google cites a 71.4 score on Hume's Voice Design Benchmark, while Voice Arena ranks it second with 1,260 Elo.
What changed from the Gemini 3.1 Flash TTS Preview?
Flash-Lite TTS takes the place of the 3.1 preview and drops audio output pricing from $20 to $6 per million tokens.
Can I clone a voice, and what safeguards apply?
Yes, with limits: you must supply a reference clip and a matching consent recording from the same adult speaker.
Why is the model reading my stage directions aloud?
Because every input line is treated as a verbatim transcript — shift longer directions into the speech metadata field.
Run Gemini 3.8 Flash TTS on Your Own Scripts
Try both tiers inside the Gemini API or Google AI Studio: moving between Gemini 3.8 Flash TTS and Flash-Lite TTS takes nothing more than a new model identifier. Weigh batch against priority inference before you lock in a production budget.