What is the context window of UI-TARS 7B?

It supports up to a 128K-token context window, which suits long multi-step GUI automation runs.

How much does UI-TARS 7B cost?

Pricing is usage-based: $0.1 per million input tokens and $0.2 per million output tokens. There is no fixed monthly fee. You pay only for what you use.

How do I access UI-TARS 7B from inside Iran?

Create an account on Hormouz and generate an API key. Hormouz provides a stable path to UI-TARS 7B from inside Iran, with no foreign credit card required.

Is UI-TARS 7B compatible with OpenAI code?

Yes. Hormouz exposes an OpenAI-compatible API. Just change the base URL to Hormouz and swap in your Hormouz key. Your existing SDKs and code run without a rewrite.

ByteDance: UI-TARS 7B : AI model

UI-TARS 7B is ByteDance's multimodal GUI agent for desktop, web, mobile and games, with a 128K-token context, via Hormouz.

Context window:: 128,000 tokens
Input:: $0.1/1M tokens
Output:: $0.2/1M tokens
Type:: text, image

Vision
Streaming
Long context

UI-TARS 7B is a multimodal vision-language agent from ByteDance, optimized for GUI-based environments including desktop interfaces, web browsers, mobile systems and games. It builds on the UI-TARS framework with reinforcement-learning-based reasoning for robust action planning and execution.

It accepts image and text input and returns text, and supports breaking a task into intermediate reasoning steps during inference. A design aimed at reliable action across virtual interfaces.

Through Hormouz, UI-TARS 7B is served behind an OpenAI-compatible API. Point your base URL at Hormouz, drop in a Hormouz key, and existing OpenAI SDK code runs unchanged. Pricing is usage-based: $0.1 per million input tokens and $0.2 per million output tokens, with no fixed monthly fee.

Hormouz provides stable access to UI-TARS 7B from inside Iran, with no foreign credit card or circumvention tooling required.

UI-TARS-1.5 is a multimodal vision-language agent optimized for GUI-based environments, including desktop interfaces, web browsers, mobile systems, and games. Built by ByteDance, it builds upon the UI-TARS framework with reinforcement...

Quickstart

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/ui-tars-1.5-7b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

Vendor	ByteDance
Type	Text, Image
Context window	128,000 tokens
Pricing	$0.10/M in · $0.20/M out
API	Chat Completions
Capabilities	Streaming · Vision

Code example

cURL

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/ui-tars-1.5-7b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Python

from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
    model="bytedance/ui-tars-1.5-7b",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
  model: "bytedance/ui-tars-1.5-7b",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Buy the ByteDance: UI-TARS 7B API, paid in rial

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One Hormouz key reaches ByteDance: UI-TARS 7B 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

What is UI-TARS 7B and what is it good for?: UI-TARS 7B is ByteDance's multimodal GUI agent for desktop, web, mobile and game interfaces.
What is the context window of UI-TARS 7B?: It supports up to a 128K-token context window, which suits long multi-step GUI automation runs.
How much does UI-TARS 7B cost?: Pricing is usage-based: $0.1 per million input tokens and $0.2 per million output tokens. There is no fixed monthly fee. You pay only for what you use.
How do I access UI-TARS 7B from inside Iran?: Create an account on Hormouz and generate an API key. Hormouz provides a stable path to UI-TARS 7B from inside Iran, with no foreign credit card required.
Is UI-TARS 7B compatible with OpenAI code?: Yes. Hormouz exposes an OpenAI-compatible API. Just change the base URL to Hormouz and swap in your Hormouz key. Your existing SDKs and code run without a rewrite.

Updated 2026-10-13