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.

Model by ByteDance

IndexedLicense unknown

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{
  "model": "bytedance/ui-tars-1.5-7b",
  "baseURL": "https://openrouter.ai/api/v1"
}

OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.

Settings it needs

OPENROUTER_API_KEYrequiredsecret

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About

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...

Use cases: browser-automation

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Price and limits

Variant	Input $/M tokens	Output $/M tokens	Cached input $/M
Standard	$0.1	$0.2	$0.1

Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.

Provider: ByteDance
Model id: bytedance/ui-tars-1.5-7b
Context window: 128,000 tokens (128K)
Max output: 2,048 tokens
Input: image, text
Output: text
Tool calling: Not listed
Structured outputs: Yes
Reasoning: No
Weights: Open: ByteDance-Seed/UI-TARS-1.5-7B
Released: Jul 22, 2025
Knowledge cutoff: 2025-01-31

Details

Auth: API key
License: License unknown
Docs: openrouter.ai/bytedance/ui-tars-1.5-7b/api
First seen: Oct 24, 2026
Last checked: Oct 26, 2026
Source: OpenRouter

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Cite this page

UI-TARS 7B: price, context window, tool use. Agent Mart. https://agentmart.dev/models/bytedance-ui-tars-1-5-7b (last updated 2026-10-26)