Gemini 3.8 Flash-Lite TTS

Gemini 3.8 Flash-Lite TTS is Google’s text-to-speech model optimized for high-volume, cost-efficient audio generation across more than 100 languages. It combines expressive speech with fine-grained control over tone, pacing, and line-by-line delivery, supporting long-form narration and native two-speaker conversations. Built for scale, it helps developers and creators power multilingual dubbing, audio content production, and expressive voice agents. Your use is subject to Google's Terms & Privacy Policies.

Input and output price 50% off: Input $0.50, Output $6, Per 1M tokens

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// Requires ai@7 and @ai-sdk/gateway@4.
import { experimental_generateSpeech as generateSpeech } from 'ai';
import { gateway } from '@ai-sdk/gateway';
import { writeFile } from 'node:fs/promises';

const result = await generateSpeech({
  model: gateway.speechModel('google/gemini-3.8-flash-lite-tts'),
  text: 'Hello from the Vercel AI Gateway!',
  voice: 'Kore',
  outputFormat: 'wav',
});

await writeFile('speech.wav', result.audio.uint8Array);

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Overview Playground Providers Similar

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Try out Gemini 3.8 Flash-Lite TTS by Google. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.

Gemini 3.8 Flash-Lite TTS

Text

The text the model will read aloud.

Voice

Your generated audio will appear here

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Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.

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Provider

Input	Capabilities	ZDR	No Training	Free Tier	Release Date

Google

50% off

Legal:Terms•Privacy

$0.50/M chars

09/23/2026

Copy link to headingMore models by Google

Model

Context	Latency	Throughput	Input	Output	Cache	Web Search	Capabilities	Providers	ZDR	No Training	Free Tier	Release Date

google/gemini-3.8-flash

2.4 s

343 tps

$0.75/M

$3.75/M

Read$0.08/M

$14/K+1 more

09/02/2026

google/gemini-3.7-flash

1.7 s

266 tps

$0.75/M

$3.75/M

Read$0.08/M

$14/K+1 more

08/13/2026

google/gemini-3.5-flash-lite

0.6 s

374 tps

$0.30/M

$2.50/M

Read$0.03/M

$14/K+1 more

07/21/2026

google/gemini-3.1-flash-lite

0.7 s

207 tps

$0.25/M

$1.50/M

Read$0.03/M

$14/K+1 more

05/07/2026

google/gemini-3-flash

0.7 s

181 tps

$0.50/M+1 more

$3/M+1 more

Read$0.05/M

$14/K+1 more

12/17/2025

google/gemini-2.5-flash-lite

0.2 s

358 tps

$0.10/M

$0.40/M

Read$0.01/M

$35/K+1 more

06/17/2025