UI-TARS 7B
by ByteDanceReleased Jul 22, 2025
bytedance/ui-tars-1.5-7b- Reads images
- Answers in a JSON schema
- Caches long prompts
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...
- Input / 1M tokens
- $0.12
- Output / 1M tokens
- $0.24
- Context
- 128K
- Longest answer
- 2K
What it costs
What each call is charged to the token's AI credit.
| Billed for | You pay |
|---|---|
| Input tokens | $0.12 / 1M |
| Output tokens | $0.24 / 1M |
| Cached input, read | $0.12 / 1M |
A typical call
A short chat turn: 2,000 tokens in, 500 out.
- per call
- $0.0004
- calls per $20
- 56K
What it can do
From its listing. The router passes every field through.
- Reads imagesYes
- Reads files and PDFsNo
- Hears audioNo
- Calls toolsNo
- Answers in a JSON schemaYes
- Reasons before it answersNo
- Searches the webNo
- Caches long promptsYes
- Draws imagesNo
Call it
Any router key works, in the format your SDK already speaks.
import OpenAI from "openai";const ai = new OpenAI({ baseURL: "https://relayfor.si/api/v1", apiKey: process.env.RELAYFOR_ROUTER_KEY,});const reply = await ai.chat.completions.create({ model: "bytedance/ui-tars-1.5-7b", messages: [{ role: "user", content: "Welcome the 1,000th holder in one line." }],});Specifications
What its maker and providers list for it.
- Reads
- Images and Text
- Writes
- Text
- Context
- 128,000 tokens
- Longest answer
- 2,048 tokens
- Knowledge cutoff
- Jan 31, 2025
- Released
- Jul 22, 2025
- Moderation
- None
Request fields
The fields its providers accept, passed through as you send them.
- frequency_penalty
- logit_bias
- logprobs
- max_tokens
- presence_penalty
- repetition_penalty
- seed
- stop
- structured_outputs
- temperature
- top_k
- top_logprobs
- top_p
Questions
How much does UI-TARS 7B cost?
$0.12 per million input tokens and $0.24 per million output tokens, paid from the token's AI credit. A call of 2,000 tokens in and 500 out costs about $0.0004.
How do I call UI-TARS 7B ?
Make a router key for one of your tokens on the dashboard, point any OpenAI or Anthropic SDK at https://relayfor.si/api/v1 and send the model id bytedance/ui-tars-1.5-7b. The token's AI credit pays for each call.
How long a prompt can UI-TARS 7B take?
Up to 128,000 tokens of context, and up to 2,048 tokens in one answer.
Are my prompts stored?
No. The RFS Router passes each call through and keeps only its token counts and cost, for the token's usage page.
Similar in price
Output price per 1M tokens
