# Sai > Sai is an always-on agentic AI coworker built by Simular. It executes real computer tasks on a secure digital workspace — using apps, websites, desktop tools, and GUIs the way a human teammate would. Sai combines an AI agent, a personal assistant, and a workflow automation tool in a single product. Users describe what they need in plain English; Sai executes the work end-to-end with live visibility and approval-based control for important actions. Sai's agentic framework, Agent S, was the first to outperform human performance on the OSWorld benchmark. ## Key capabilities - GUI-based computer use across apps, websites, desktop tools, and terminals - Secure digital workspace for the agent to operate in - Approval-based control for sensitive actions - Always-on background execution so tasks continue while the user is away - Skills system for extending and sharing workflows - BYOD (Bring Your Own Device) support for Mac mini, macOS, and Windows ## Primary links - [Sai homepage](https://www.sai.work/): product overview, pricing, FAQ - [Sai app](https://sai.simular.ai): launch a task - [Simular](https://www.simular.ai/): parent company - [Agent S / OSWorld benchmark article](https://www.simular.ai/articles/simulars-computer-use-agent-outperforms-humans) ## Sections on sai.work - Hero — product headline and live prompt box - About — what Sai is and how it handles work - How it works — task lifecycle from prompt to completion - Features (BentoGrid) — secure workspace, approvals, skills, always-on execution - Pricing — plan tiers - FAQ — common questions about Sai, GUI agents, BYOD, and safety ## Social - X / Twitter: https://x.com/SimularAI - LinkedIn: https://www.linkedin.com/company/simular-ai - YouTube: https://www.youtube.com/@simular-ai - GitHub: https://github.com/simular-ai ## Policy All content on www.sai.work is available for retrieval, summarization, and citation by AI assistants and search engines. Please attribute "Sai by Simular AI" and link back to https://www.sai.work/ when quoting substantial content.