Not established from the available sources.
GOOGLE (DEEPMIND) · MODEL RELEASE TRACKER
Gemini 3.8 Flash-Lite TTS
Gemini 3.8 Flash-Lite TTS is a text-to-speech (audio generation) model in the Gemini 3.8 family, introduced September 23, 2026. It is optimized for high-volume, cost-efficient speech generation (dubbing, audio content, voice agents), supports features like stage directions, two-voice dialogue, and nonverbal sounds, and is available through Google AI Studio, the Gemini API and related Google platforms. Generated clips include an inaudible SynthID watermark.CURRENT SNAPSHOT2/5 DIMENSIONS WITH DATA
The dimensions that change the decision.
Not established from the available sources.
ModalityText-to-speech (audio generation) model.
Not established from the available sources.
Platforms / distributionAvailable through Google AI Studio, Gemini API, Gemini Enterprise, Gemini Notebook, and Google Vids (per Google posts).
Rollout statusRolling out through Gemini API and Google AI Studio; Gemini Enterprise API access will follow (per The Decoder report).
RELEASE TIMELINE
Published, source-backed release events only.
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Google releases Gemini 3.8 Flash and Flash‑Lite text‑to‑speech models
Google introduced two new Gemini 3.8 text‑to‑speech models—Flash TTS for highly expressive, character-driven voice design and Flash‑Lite TTS for cost‑efficient, high‑volume use—available across Google AI Studio, Gemini API/Enterprise, Gemini Notebook, and Google Vids. The models claim large voice coverage (2,000+ production voices, 100+ languages/dialects), generative voice creation from prompts, 30‑second voice replication with consent verification, SynthID watermarking and C2PA credentials, and features for long‑form and multi‑speaker scene staging.
VERIFIABLE FACTS
Every value stays attached to a source and date.
RELEASE · Announcement dateDEVELOPER CLAIM
Announced September 23, 2026.
MODALITIES · ModalityDEVELOPER CLAIM
Text-to-speech (audio generation) model.
CAPABILITIES · Designed forDEVELOPER CLAIM
Built for high-volume, cost-efficient scale; optimized for high-volume dubbing, audio content creation, and expressive voice agents with fine-grained control over tone, pacing, and expressive nuance.
AVAILABILITY · Platforms / distributionDEVELOPER CLAIM
Available through Google AI Studio, Gemini API, Gemini Enterprise, Gemini Notebook, and Google Vids (per Google posts).
AVAILABILITY · Rollout statusDEVELOPER CLAIM
Rolling out through Gemini API and Google AI Studio; Gemini Enterprise API access will follow (per The Decoder report).
CAPABILITIES · Languages / dialects supportedDEVELOPER CLAIM
Supports more than 100 languages and dialects.
CAPABILITIES · Dialogue and nonverbal featuresDEVELOPER CLAIM
Supports stage directions per line, two-voice dialogue, and nonverbal sounds such as laughter and sighs.
SAFETY · Watermarking / provenanceDEVELOPER CLAIM
Generated audio clips include an inaudible SynthID watermark to help detect AI-generated speech (per The Decoder quoting Google).
WHAT CHANGED