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Issue 001 / A living technical almanac

System scan: active

Agent Infrastructure · Head-to-head

cua vs steel-browser

cua and steel-browser are both agent infrastructure. cua is Open-source infrastructure for Computer-Use Agents. Sandboxes, SDKs, and benchmarks to train and evaluate AI agents that can control full d…, while steel-browser is open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web witho…. Here's an independent, side-by-side look at how they compare — and which fits.

cua

Infrastructure· Open source

Open-source infrastructure for Computer-Use Agents. Sandboxes, SDKs, and benchmarks to train and evaluate AI agents that can control full d…

Visit cua
steel-browser

Infrastructure· Open source

Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web witho…

Visit steel-browser

Side by side

Speccuasteel-browser
TypeInfrastructureInfrastructure
ModelOpen sourceOpen source
PricingOpen sourceOpen source
GitHub stars19,3207,264
LanguageHTMLTypeScript
LicenseMITApache-2.0
Last activityJul 2026Jun 2026

Choose cua if

you want the more widely-adopted project (19k GitHub stars).

Choose steel-browser if

your team works primarily in TypeScript.

About cua

Open-source infrastructure for Computer-Use Agents. Sandboxes, SDKs, and benchmarks to train and evaluate AI agents that can control full desktops (macOS, Linux, Windows).

Full cua profile →

About steel-browser

Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.

Full steel-browser profile →
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →

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