Zhaoyang Wang(@zhaoywang_CS):⚓ WebHarbor⚓ Introducing the largest open-source environment resources for GUI Web Agents! 🌐 153 real-world websites (Amazon, GitHub, Booking, YouTube, ...) 🎯 3,518 tasks, including complex multi-step and authenticated workflows 🤖 Built for reproducible evaluation and scalable RL training We started with just 15 environments in May 2026. Today, thanks to 57 contributors from 26 institutions, we've scaled to 153 high-fidelity, image-rich environments—the largest open-source collection of its kind, to our knowledge! 🔥 And they're all executable, offline, and fully open-source! 👀 Explore the environments now: https://t.co/RheS6vMCqp Why did we build it, and how? 🧵👇 Threads 1/5

2026.11.06 03:57

⚓ WebHarbor⚓ Introducing the largest open-source environment resources for GUI Web Agents! 🌐 153 real-world websites (Amazon, GitHub, Booking, YouTube, ...) 🎯 3,518 tasks, including complex multi-step and authenticated workflows 🤖 Built for reproducible evaluation and scalable RL training We started with just 15 environments in May 2026. Today, thanks to 57 contributors from 26 institutions, we've scaled to 153 high-fidelity, image-rich environments—the largest open-source collection of its kind, to our knowledge! 🔥 And they're all executable, offline, and fully open-source! 👀 Explore the environments now: Why did we build it, and how? 🧵👇 Threads 1/5