How do I use Gemini 3.8 Flash TTS from inside Iran?

Create a Hormouz account and generate an API key. Hormouz gives you a stable route to the model from inside Iran, with no foreign credit card or circumvention tooling needed.

Can Gemini 3.8 Flash TTS voice a dialogue with two speakers?

Yes. Send input as a list of turns, each with its text and voice, and the turns are spoken in order in one audio file.

Google: Gemini 3.8 Flash TTS: audio model

Gemini 3.8 Flash TTS is the creative tier of Google's Gemini 3.8 text-to-speech family, for narration, characters and multi-speaker dialogue. Reachable from inside Iran through Hormouz.

Pricing:: $0.5/M text tokens · $9/M audio tokens
Type:: audio

Audio

Gemini 3.8 Flash TTS is a text-to-speech model from Google and the successor to Gemini 3.1 Flash TTS Preview. It is the creative tier of the 3.8 family, where voice fidelity, acting nuance and regional dialect coverage matter more than latency.

It offers 30 prebuilt studio voices and multi-speaker dialogue: send the input as a list of turns, each with its own voice. Hormouz serves Gemini 3.8 Flash TTS on two endpoints: the OpenAI-compatible /v1/audio/speech, which returns the audio in the same response, and /v1/predictions for background jobs. Set voice to one of the model's own voices, for example "Kore", and response_format to pcm.

Billing has two parts: the input text and the length of the generated audio (audio tokens); the current rates are in the price table on this page. Hormouz provides stable access to it from inside Iran, with no foreign credit card or circumvention tooling required.

Gemini 3.8 Flash TTS is a text-to-speech model from Google and the successor to Gemini 3.1 Flash TTS Preview. It is the creative tier of the 3.8 TTS family, suited...

Quickstart

curl https://api.hormouz.net/v1/audio/speech \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.8-flash-tts","voice":"Zephyr","input":"Hello from Hormouz.","response_format":"pcm"}' \
  --output speech.pcm

Specs

Vendor	Google
Type	Audio
Context window	—
Pricing	$0.5/M text tokens · $9/M audio tokens
API	speech

Code example

cURL

curl https://api.hormouz.net/v1/audio/speech \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.8-flash-tts","voice":"Zephyr","input":"Hello from Hormouz.","response_format":"pcm"}' \
  --output speech.pcm

Python

from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
with client.audio.speech.with_streaming_response.create(
    model="google/gemini-3.8-flash-tts",
    voice="Zephyr",
    input="Hello from Hormouz.",
    response_format="pcm",
) as resp:
    resp.stream_to_file("speech.pcm")

JavaScript

import OpenAI from "openai";
import { writeFile } from "node:fs/promises";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const speech = await client.audio.speech.create({
  model: "google/gemini-3.8-flash-tts",
  voice: "Zephyr",
  input: "Hello from Hormouz.",
  response_format: "pcm",
});
await writeFile("speech.pcm", Buffer.from(await speech.arrayBuffer()));

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FAQ

How much does Gemini 3.8 Flash TTS cost?: Billing has two parts: the input text and the length of the generated audio (audio tokens); the current rates are in the price table on this page.
How do I use Gemini 3.8 Flash TTS from inside Iran?: Create a Hormouz account and generate an API key. Hormouz gives you a stable route to the model from inside Iran, with no foreign credit card or circumvention tooling needed.
How do I call Gemini 3.8 Flash TTS?: Hormouz serves Gemini 3.8 Flash TTS on two endpoints: the OpenAI-compatible /v1/audio/speech, which returns the audio in the same response, and /v1/predictions for background jobs. Set voice to one of the model's own voices, for example "Kore", and response_format to pcm.
Can Gemini 3.8 Flash TTS voice a dialogue with two speakers?: Yes. Send input as a list of turns, each with its text and voice, and the turns are spoken in order in one audio file.

Updated 2026-10-13