
Open House 2026 is officially live - A global program for founders & builders - $800,000 in prizes - Four cities First stop: New York City 🗽 Register now openhouse.arbitrum.io/?utm_source=tw…
Arbitrum Developers
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@ArbitrumDevs
Technical resource hub for all @arbitrum developers. Tutorials, updates, and technical announcements.

Open House 2026 is officially live - A global program for founders & builders - $800,000 in prizes - Four cities First stop: New York City 🗽 Register now openhouse.arbitrum.io/?utm_source=tw…

Welcome the 1st Cohort of the Arbitrum Mentorship Program. Out of 900+ applicants, 13 teams across AI, payments, RWAs and emerging DeFi were selected for an 8-week program to launch new products on the Arbitrum Platform. Meet the teams building the programmable economy. 👇









🚀 Introducing ARBuilder: the AI assistant that lets you build on Arbitrum in the smoothest way possible! Describe what you want: Stylus contracts, bridges, dApps, or Orbit L3s and you'll get working code, verified by real compilation. ✅ 19 specialized tools ✅ Works in Cursor, VS Code, Windsurf (MCP), Claude Code & Web Playground ✅ Live docs + 3-stage reranking pipeline ✅ No SDK version mix-ups, no broken code From an idea to a deployed dApp 🪄 Read the full technical breakdown 👇





