Is Stagehand or UI-TARS-desktop free?

Stagehand is free to run and self-host; UI-TARS-desktop is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.

Which is more popular, Stagehand or UI-TARS-desktop?

By GitHub stars — a proxy for open-source adoption — UI-TARS-desktop is ahead (39k vs 24k). Stars measure attention, not necessarily the better fit for you.

Browser & Computer Use · Head-to-head

Stagehand vs UI-TARS-desktop

Stagehand and UI-TARS-desktop are both browser & computer use. Stagehand is A browser-agent SDK for actions, structured extraction and page observation, while UI-TARS-desktop is the Open-Source Multimodal AI Agent Stack: Connecting Cutting-Edge AI Models and Agent Infra. Here's an independent, side-by-side look at how they compare — and which fits.

Stagehand

SDK / library· Open source

A browser-agent SDK for actions, structured extraction and page observation.

Visit Stagehand →

UI-TARS-desktop

Agent· Open source

The Open-Source Multimodal AI Agent Stack: Connecting Cutting-Edge AI Models and Agent Infra

Visit UI-TARS-desktop →

Bottom line

Stagehand and UI-TARS-desktop are both open-source browser & computer use you can self-host for free. UI-TARS-desktop has wider GitHub adoption — 39k stars vs 24k. Neither is universally better — pick by fit.

Building one yourself? How to build a browser-automation agent →

Side by side

Spec	Stagehand	UI-TARS-desktop
Type	SDK / library	Agent
Model	Open source	Open source
Pricing	Open source	Open source
GitHub stars	24,284	38,962
Language	—	TypeScript
License	MIT	Apache-2.0
Last activity	Sep 2026	Sep 2026

Key differences

UI-TARS-desktop has wider GitHub adoption — 39k stars vs 24k.
Licensing differs: Stagehand is MIT, UI-TARS-desktop is Apache-2.0.

Choose Stagehand if

Developers building browser agents who want code-level control alongside natural-language actions and structured extraction.

Choose UI-TARS-desktop if

Vision-driven GUI automation across desktop, browser, and terminal.

About Stagehand

Stagehand is a browser automation SDK from Browserbase. It combines code-driven browser control with model-assisted actions, extraction and observation. The SDK is open source; model calls and hosted browser sessions can have separate costs. It is distinct from the Browserbase hosted platform.

Full Stagehand profile →

About UI-TARS-desktop

The Open-Source Multimodal AI Agent Stack: Connecting Cutting-Edge AI Models and Agent Infra

Full UI-TARS-desktop profile →

Frequently asked

What's the main difference between Stagehand and UI-TARS-desktop?: UI-TARS-desktop has wider GitHub adoption — 39k stars vs 24k.
Is Stagehand or UI-TARS-desktop better?: Neither is universally better. Stagehand is the stronger fit for Developers building browser agents who want code-level control alongside natural-language actions and structured extraction; UI-TARS-desktop for Vision-driven GUI automation across desktop, browser, and terminal. Use the side-by-side specs to decide by your own constraints.
Is Stagehand or UI-TARS-desktop free?: Stagehand is free to run and self-host; UI-TARS-desktop is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.
Which is more popular, Stagehand or UI-TARS-desktop?: By GitHub stars — a proxy for open-source adoption — UI-TARS-desktop is ahead (39k vs 24k). Stars measure attention, not necessarily the better fit for you.

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