How do I use Fish Audio S2 Pro 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.

What is the difference between Fish Audio S2 Pro and S2.1 Pro?

Both are multilingual and steered in natural language. S2.1 Pro is the newer, production-oriented version with open-ended style and emotion controls.

Fish Audio: S2 Pro: audio model

S2 Pro is Fish Audio's multilingual text-to-speech model for expressive narration and multi-speaker dialogue, steered in natural language. Reachable from inside Iran through Hormouz.

Pricing:: $15/M UTF-8 bytes
Type:: audio

Audio

S2 Pro is a multilingual text-to-speech model from Fish Audio, suited to expressive narration and multi-speaker dialogue.

It has no fixed voice list: speaking style and emotion are set with controls written into the text. S2 Pro takes those controls in natural language, so you can describe the style you want in words. Hormouz serves Fish Audio S2 Pro on two endpoints: the OpenAI-compatible /v1/audio/speech, which returns the audio in the same response, and /v1/predictions for background jobs. Set response_format to mp3 or pcm.

Billing is per UTF-8 byte of input text (a Persian character counts as two bytes); the current rate is 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.

S2 Pro is a multilingual text-to-speech model from Fish Audio. It is suited for expressive narration and multi-speaker dialogue, with natural-language controls for speaking style and emotion.

Quickstart

curl https://api.hormouz.net/v1/audio/speech \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"fish-audio/s2-pro","voice":"eve","input":"Hello from Hormouz.","response_format":"mp3"}' \
  --output speech.mp3

Specs

Vendor	Fish Audio
Type	Audio
Context window	—
Pricing	$15/M UTF-8 bytes
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":"fish-audio/s2-pro","voice":"eve","input":"Hello from Hormouz.","response_format":"mp3"}' \
  --output speech.mp3

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="fish-audio/s2-pro",
    voice="eve",
    input="Hello from Hormouz.",
    response_format="mp3",
) as resp:
    resp.stream_to_file("speech.mp3")

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: "fish-audio/s2-pro",
  voice: "eve",
  input: "Hello from Hormouz.",
  response_format: "mp3",
});
await writeFile("speech.mp3", Buffer.from(await speech.arrayBuffer()));

Buy the Fish Audio: S2 Pro API, paid in rial

Buy credit with an Iranian bank card; no foreign card or account needed.
One Hormouz key reaches Fish Audio: S2 Pro and 600+ other models, and you pay only for what you use.
No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.

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FAQ

How much does Fish Audio S2 Pro cost?: Billing is per UTF-8 byte of input text (a Persian character counts as two bytes); the current rate is in the price table on this page.
How do I use Fish Audio S2 Pro 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 Fish Audio S2 Pro?: Hormouz serves Fish Audio S2 Pro on two endpoints: the OpenAI-compatible /v1/audio/speech, which returns the audio in the same response, and /v1/predictions for background jobs. Set response_format to mp3 or pcm.
What is the difference between Fish Audio S2 Pro and S2.1 Pro?: Both are multilingual and steered in natural language. S2.1 Pro is the newer, production-oriented version with open-ended style and emotion controls.

Updated 2026-10-13