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Voice & realtimeLive
Google

Gemini 3.8 Flash-Lite TTS

Google's lower-cost speech-generation model for read-aloud features and high-volume audio in 101 languages.

Open provider docsSee key facts

Plain-English overview

What Gemini 3.8 Flash-Lite TTS actually is

Flash-Lite TTS turns scripts into speech using the same request format as Flash TTS, at a lower audio-output price. It is a practical option for repeated voiceovers and the speaking component of a voice assistant.

Both models support custom voice design and two-speaker scripts. They generate speech, not answers: a conversational assistant still needs separate listening and reasoning components. They do not use the Gemini Live API.

Good fit for

  • Read-aloud features
  • High-volume voiceovers
  • Voice-agent speech

Category comparison

The facts that matter for voice models

These are provider-published specifications, not Cody benchmark scores. Follow the linked sources for current limits and endpoint-specific exceptions.

Price basis
$0.50 text input · $6 audio output / 1M tokensToken-, character-, or minute-based price for the listed access route.
Interaction mode
Text-to-speech with two-speaker dialogueSpeech-to-speech, audio-to-audio, or streamed text-to-speech behavior.
Published latency
Not publishedProvider-published measurement with its stated exclusions; not a Cody test.
Languages
101 languagesProvider-documented language coverage or a clear unpublished marker.
Tools & control
Voice design and replication; no function callingNative function calling, reasoning, or speech-control features.
Context or input limit
8,192 input · 16,384 output tokensDocumented token or character limit where it is meaningful.

API and provider access

Where to get Gemini 3.8 Flash-Lite TTS

GoogleGemini TTS APIText-to-speech model and API documentation.

Availability

Regions and access stage

Available through the Gemini API and Google AI Studio in supported regions.

AI Studio voice replication excludes Illinois, Texas, the EEA, UK, Switzerland and India. This restriction is not a blanket ban on TTS in those regions.

Check live availability

Data and training

The route matters.

Google says paid Gemini API prompts and responses are not used to improve its products. Unpaid-service content generally may be used, with different treatment for EEA, UK, and Swiss users; check the current terms for your account and region.

This is a concise reading of the cited provider material, not legal advice. A third-party gateway can have different storage, routing, training, and residency terms from the model maker's direct API.

Read the provider policy

Frequently asked questions

Gemini 3.8 Flash-Lite TTS FAQ

What is Gemini 3.8 Flash-Lite TTS?

Google's lower-cost speech-generation model for read-aloud features and high-volume audio in 101 languages. Flash-Lite TTS turns scripts into speech using the same request format as Flash TTS, at a lower audio-output price. It is a practical option for repeated voiceovers and the speaking component of a voice assistant.

When was Gemini 3.8 Flash-Lite TTS released?

Gemini 3.8 Flash-Lite TTS was released on September 23, 2026 according to the cited provider materials.

Where can I access Gemini 3.8 Flash-Lite TTS?

Available through the Gemini API and Google AI Studio in supported regions. The access routes listed in this guide are Google.

How much does Gemini 3.8 Flash-Lite TTS cost?

$0.50 text input · $6 audio output / 1M tokens. Introductory Standard rates through December 31, 2026; both rates double on January 1, 2027. Audio uses 25 tokens per second. Caching and other service tiers have different rates.

Where is Gemini 3.8 Flash-Lite TTS available?

Available through the Gemini API and Google AI Studio in supported regions. AI Studio voice replication excludes Illinois, Texas, the EEA, UK, Switzerland and India. This restriction is not a blanket ban on TTS in those regions.

Is my Gemini 3.8 Flash-Lite TTS API data used for training?

Google says paid Gemini API prompts and responses are not used to improve its products. Unpaid-service content generally may be used, with different treatment for EEA, UK, and Swiss users; check the current terms for your account and region. The policy belongs to the provider route and account terms, so verify it again before production use.

Related comparisons

Head-to-head comparisons

View category →

  1. Gemini 3.8 Flash-Lite TTS vs Gemini 3.8 Flash TTS

    Google's speech-generation model for expressive narration, character voices and dialogue in 130 languages.

    Open full comparison

  2. Gemini 3.8 Flash-Lite TTS vs Eleven v3 Conversational

    ElevenLabs' expressive realtime text-to-speech model for natural dialogue, emotional delivery, audio tags, and more than 70 languages.

    Open full comparison

  3. Gemini 3.8 Flash-Lite TTS vs Inworld Realtime TTS-2

    Inworld's newest expressive realtime text-to-speech model, designed to remember conversational delivery and speak in more than 100 languages.

    Open full comparison