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ByteDance · Language model

UI-TARS 7B

bytedance/ui-tars-1.5-7b
  • Language
Released Jul 22, 2025

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...

Specifications

Context window
128,000 tokens
Max output
2,048 tokens
Input
image, text
Output
text
Tokenizer
Other
Knowledge cutoff
2025-01-31

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • frequency_penalty
  • logit_bias
  • logprobs
  • max_tokens
  • presence_penalty
  • repetition_penalty
  • seed
  • stop
  • structured_outputs
  • temperature
  • top_k
  • top_logprobs
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"bytedance/ui-tars-1.5-7b","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'