YepAPI
GoogleText to Speech/v1/media/queue

Gemini 3.8 Flash Lite TTS API

Gemini 3.8 Flash Lite TTS text to speech — fast, high-throughput Gemini 3.8 TTS, 30 voices, billed on input length.

The fast, high-throughput member of Google's Gemini 3.8 TTS family. 30 named voices at roughly a third less per character than Gemini 3.8 Flash TTS; returns raw 24 kHz PCM.

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Gemini 3.8 Flash Lite TTS API pricing

Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.

BillingPrice
Rate$0.0359/1K chars
What it costsPer job
Short reply200 characters$0.0072
Blog post narration10,000 characters (~1,600 words)$0.359
Audiobook chapter100,000 characters$3.59

2,400+

Developers

1.2M+

API calls served

100+

Endpoints

$0.01

Per call

Yep, that's it.

Playground coming soon — use the API endpoint directly with your API key.

Gemini 3.8 Flash Lite TTS specs

ProviderGoogle
Model IDgoogle/gemini-3.8-flash-lite-tts
Endpoint/v1/media/queue
TypeText to Speech
Output formatspcm
Voices30 presets (default Zephyr)

How to get a Gemini 3.8 Flash Lite TTS API key

  1. 1

    Create a free account

    Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.

  2. 2

    Create an API key

    Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.

  3. 3

    Call Gemini 3.8 Flash Lite TTS

    Send a request to /v1/media/queue with the x-api-key header and model "google/gemini-3.8-flash-lite-tts".

  4. 4

    Pay as you go

    Usage is billed per request from your balance. Top up any amount; there is no subscription.

Strengths

✓
Fast, high throughput

The fast member of the Gemini 3.8 TTS family, built for volume.

✓
30 named voices

The same voice catalogue as Gemini 3.8 Flash TTS.

✓
Cheaper per character

Roughly a third less than Gemini 3.8 Flash TTS per character.

✓
24 kHz PCM output

Returns headerless raw PCM rather than MP3, which suits real-time streaming pipelines.

Quick start

Copy this snippet and start making calls with Gemini 3.8 Flash Lite TTS.

// Step 1: Submit job
const res = await fetch('https://api.yepapi.com/v1/media/queue', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "google/gemini-3.8-flash-lite-tts",
    "prompt": "Your daily summary: three new messages, one calendar change, and a reminder to submit your expenses by Friday.",
    "options": {
      "voice": "Zephyr"
    }
  }),
});
const { data } = await res.json();
const jobId = data.jobId;

// Step 2: Poll for result
const status = await fetch(`https://api.yepapi.com/v1/media/status/${jobId}`, {
  headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status: "pending" | "processing" | "completed" | "failed"
// job.result: { text?, image?, audio?, video? }

Gemini 3.8 Flash Lite TTS vs similar models

Every model below runs on the same API key — switch by changing the model ID.

ModelProviderPrice
Gemini 3.8 Flash Lite TTSGoogle$0.0359/1K chars
Gemini 3.8 Flash TTSGoogle$0.0527/1K chars
Gemini 3.1 Flash TTSGoogle$0.2005/1K chars
Kokoro 82Mhexgrad$0.0014/1K chars
Fish Audio Drama 3Fish Audio$0.0042/1K chars
HeyGen Voice TurboHeyGen$0.0084/1K chars
Sesame CSM 1BSesame$0.0148/1K chars
Voxtral TTS 3Mistral$0.0302/1K chars

Why use Gemini 3.8 Flash Lite TTS through YepAPI?

✓One API key for all models — no separate accounts
✓No monthly minimums — pay per call
✓Switch models with one line of code
✓Simple REST API — works from any language
✓Unified billing across all providers
✓No rate limits for most use cases

Gemini 3.8 Flash Lite TTS API — fast, high-throughput speech

Gemini 3.8 Flash Lite TTS is a text-to-speech model from Google and the fast, high-throughput member of the Gemini 3.8 TTS family, alongside Gemini 3.8 Flash TTS. It ships with the same 30 named voices.

It returns raw 24 kHz PCM rather than MP3. Billed at $0.0359 per 1,000 characters on YepAPI — roughly a third less than Gemini 3.8 Flash TTS.

Start generating in 30 seconds

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What developers say

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Marcus T.

SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”

Priya S.

Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”

Jake R.

Indie Hacker

Frequently asked questions

The fast, high-throughput member of Google's Gemini 3.8 TTS family. 30 named voices at roughly a third less per character than Gemini 3.8 Flash TTS; returns raw 24 kHz PCM.

Gemini 3.8 Flash Lite TTS costs $0.0359/1K chars through YepAPI, billed per request with no monthly fee. For example, a short reply (200 characters) costs about $0.0072.

Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for Gemini 3.8 Flash Lite TTS and every other model — no separate Google account or waitlist.

New YepAPI accounts in most countries get free signup credit, enough to test Gemini 3.8 Flash Lite TTS without a card. After that you pay per request at the rates above — there is no subscription.

Use "google/gemini-3.8-flash-lite-tts" as the model on /v1/media/queue. The short alias "gemini-3-8-lite-tts" also works.

Ready to use Gemini 3.8 Flash Lite TTS?

$5 free credit on signup. No credit card required. Pay per call.

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