# 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.

- **Model ID:** `google/gemini-3.8-flash-lite-tts`
- **Type:** speech
- **Providers:** google, vertex
- **Context window:** 8,192
- **Maximum output tokens:** 16,384
- **Pricing:** $0.5/1M input tokens, $6/1M output tokens
- **Canonical page:** https://vercel.com/ai-gateway/models/gemini-3.8-flash-lite-tts

## Supported parameters

Detailed capability metadata has not been reported for this model.

## Example

```ts
// 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);
```

## Links

- [Model page](https://vercel.com/ai-gateway/models/gemini-3.8-flash-lite-tts)
- [AI Gateway documentation](https://vercel.com/docs/ai-gateway)
- [Provider pricing](https://ai.google.dev/pricing)