ByteDance Seed

UI-TARS 7B

ByteDance Seed ui-tars-1-5-7b

Model Information
Slug ui-tars-1-5-7b
Aliases ui-tars-1-5-7b uitars157b

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 learning-based reasoning, enabling robust action planning and execution across virtual interfaces. This model achieves state-of-the-art results on a range of interactive and grounding benchmarks, including OSworld, WebVoyager, AndroidWorld, and ScreenSpot. It also demonstrates perfect task completion across diverse Poki games and outperforms prior models in Minecraft agent tasks. UI-TARS-1.5 supports thought decomposition during inference and shows strong scaling across variants, with the 1.5 version notably exceeding the performance of earlier 72B and 7B checkpoints.

Available at 4 Providers
Provider Model Name Original Model Input ($/1M) Output ($/1M) Free
OpenRouter icon OpenRouter UI-TARS 7B bytedance/ui-tars-1.5-7b $0.10 $0.20
ValorGPT icon ValorGPT BY bytedance-ui-tars-1.5-7b - -
Yupp icon Yupp UI-TARS 1.5 7B (OpenRouter) bytedance/ui-tars-1.5-7b - - Visit
LangDB icon LangDB ui-tars-1.5-7b ui-tars-1.5-7b - -