How do I use Fish Audio S2.1 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.

Is there a free version of Fish Audio S2.1 Pro?

Yes. S2.1 Pro Free offers the same synthesis at no cost for testing and prototyping, without latency or availability guarantees; use S2.1 Pro for production.

Fish Audio: S2.1 Pro: audio model

S2.1 Pro is Fish Audio's production-oriented multilingual text-to-speech model, with open-ended natural-language style and emotion controls. Reachable from inside Iran through Hormouz.

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

Audio

S2.1 Pro is a production-oriented text-to-speech model from Fish Audio for multilingual voice applications, expressive narration and dialogue synthesis.

It has no fixed voice list: speaking style and emotion are set with controls written into the text. S2.1 Pro accepts open-ended natural-language direction for style and emotion. Hormouz serves Fish Audio S2.1 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.

S2.1 Pro is a production-oriented text-to-speech model from Fish Audio. It is suited for multilingual voice applications, expressive narration, and dialogue synthesis, with open-ended natural-language controls for speaking style and...

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/s2.1-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/s2.1-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/s2.1-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/s2.1-pro",
  voice: "eve",
  input: "Hello from Hormouz.",
  response_format: "mp3",
});
await writeFile("speech.mp3", Buffer.from(await speech.arrayBuffer()));

Buy the Fish Audio: S2.1 Pro API, paid in rial

Buy credit with an Iranian bank card; no foreign card or account needed.
One Hormouz key reaches Fish Audio: S2.1 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.

Create an account

Use via Hormouz

Connect to this model and 600+ others with one API key, then see usage down to each request.

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FAQ

How much does Fish Audio S2.1 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 S2.1 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 S2.1 Pro?: Hormouz serves Fish Audio S2.1 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.
Is there a free version of Fish Audio S2.1 Pro?: Yes. S2.1 Pro Free offers the same synthesis at no cost for testing and prototyping, without latency or availability guarantees; use S2.1 Pro for production.

Updated 2026-10-13