--- title: ByteDance: UI TARS 7B API | Text Generation | ModelsLab description: Multimodal 7B LLM for GUI automation across desktop, web, mobile & games; 128K context, 2K output tokens, SOTA on OSWorld/WebVoyager benchmarks.[1][2][3][9] url: https://modelslab.com/models/bytedance/bytedance-ui-tars-1.5-7b.md canonical: https://modelslab.com/models/bytedance/bytedance-ui-tars-1.5-7b type: product component: Playground/LLM/Index generated_at: 2026-09-11T04:02:46.640084Z --- ByteDance: UI-TARS 7B --- [LLMs.txt](https://modelslab.com/models/bytedance/bytedance-ui-tars-1.5-7b/llms.txt) [.md](https://modelslab.com/models/bytedance/bytedance-ui-tars-1.5-7b.md) ByteDance: UI-TARS 7B --- Choose a prompt below to get started or type your own message Explain quantum computing in simple terms Write a Python function to sort a list Create a marketing email for a SaaS product Compare REST vs GraphQL APIs images and text files Send ### ByteDance: UI-TARS 7B bytedance bytedance-ui-tars-1.5-7b Copy model ID PricingInput $0.10 / 1M tokens Output $0.20 / 1M tokens API EndpointsOpenAI Compatible `https://modelslab.com/api/v7/llm/chat/completions`Endpoint Anthropic Compatible `https://modelslab.com/api/v7/llm/v1/messages`Messages `https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens `https://modelslab.com/api/v7/llm/v1/models`Models Use with Claude Code cURL Example ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses. 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Built by ByteDance, it builds upon the UI-TARS framework with reinforcement... ### Technical Specifications Model IDbytedance-ui-tars-1.5-7b CategoryLLM Models TaskText Generation Price$0.15 per million tokens AddedFebruary 20, 2026 ### Key Features - Chat completion and multi-turn conversation API - Streaming response with token-by-token output - Function calling and tool use support - System prompts and role-based messaging - JSON mode and structured output ### Quick Start Integrate ByteDance: UI-TARS 7B into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started. PythonJavaScriptcURLPHP ``` import requests import json url = "https://modelslab.com/api/v7/llm/chat/completions" headers = { "Content-Type": "application/json" } data = { "model_id": "bytedance-ui-tars-1.5-7b", "messages": [ { "role": "user", "content": "Hello!" } ], "max_tokens": 1000, "key": "YOUR_API_KEY" } try: response = requests.post(url, headers=headers, json=data) response.raise_for_status() # Raises an HTTPError for bad responses (4XX or 5XX) result = response.json() print("API Response:") print(json.dumps(result, indent=2)) except requests.exceptions.HTTPError as http_err: print(f"HTTP error occurred: {http_err} - {response.text}") except Exception as err: print(f"Other error occurred: {err}") ``` ### Pricing ByteDance: UI-TARS 7B API costs $0.15 per million tokens. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab.com/pricing) ### Use Cases - AI chatbots and virtual assistants - Code generation and developer tools - Content writing and copywriting automation - Data analysis, summarization, and extraction [Browse LLM Models](https://modelslab.com/models?feature=llmaster) [More from ByteDance](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing) ByteDance: UI-TARS 7B FAQ --- ### What is ByteDance: UI-TARS 7B ? 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... ### How do I use the ByteDance: UI-TARS 7B API? You can integrate ByteDance: UI-TARS 7B into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "bytedance-ui-tars-1.5-7b" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does ByteDance: UI-TARS 7B cost? ByteDance: UI-TARS 7B costs $0.15 per million tokens. ModelsLab plans start at $21/month (Basic), and the $149/month Open Source plan includes unlimited generation on open-source models. ### What is the ByteDance: UI-TARS 7B model ID? The model ID for ByteDance: UI-TARS 7B is "bytedance-ui-tars-1.5-7b". Use this ID in your API requests to specify this model. ### Do I need a paid plan to use ByteDance: UI-TARS 7B ? Yes. ModelsLab is subscription-based with no free tier — plans start at $21/month (Basic, 3,250 API calls). The $149/month Open Source Unlimited plan includes unlimited generation across open-source models; premium third-party models are billed per call from your wallet. --- *This markdown version is optimized for AI agents and LLMs.* **Links:** - [Website](https://modelslab.com) - [API Documentation](https://docs.modelslab.com) - [Blog](https://modelslab.com/blog) --- *Generated by ModelsLab - 2026-09-11*