ByteDance Seed · Open weights
UI-TARS-1.5-7B
Weights are free to download and run locally or on your own servers – no per-call fees; licence terms apply.
Open weights Available 125K 🕒 Verified on 2026-10-10
Note: A vision model for GUI-operating agents.
Free conditions
- Free conditions
- Weights are free to download and run locally or on your own servers – no per-call fees; licence terms apply.
- Free until
- —
- Rate limits
- —
- Sign-up / login
- Not required
- Real-name verification
- —
- Credit card
- Not required
- Region
- —
- Data use
- When self-hosted, your data stays on your machine.
ⓘ Free to download; running it needs your own hardware or a paid host.
Specs
- Provider
- ByteDance Seed
- Platform
- Hugging Face
- Type
- Open weights
- Modalities
- Text · Vision
- Parameters
- ≈8.3B (from weight files)
- Context length
- 125K (128,000 tokens)
- License
- Apache-2.0
- Tool calling
- No
- Released
- 2025-04-16
How to access
- Hugging Face
- https://huggingface.co/ByteDance-Seed/UI-TARS-1.5-7B
Official sources
- Hugging Face – ByteDance-Seed/UI-TARS-1.5-7B https://huggingface.co/ByteDance-Seed/UI-TARS-1.5-7B
- OpenRouter models API（工具调用字段 / tool-calling field） https://openrouter.ai/api/v1/models
🕒 Verified on 2026-10-10 · Free terms change often. Always confirm limits, data-use policy and regional availability on the official page before relying on a free tier.
UI-TARS 7B: paid API prices on 1 channels →