β¦ Horizon
Your timeline AI assistant
Horizon uses the Claude API directly from your browser. Enter your Anthropic API key to get started. It's stored locally and never sent anywhere except to Anthropic.
Get your key at console.anthropic.com β this is a prototype; use a dedicated key.
Our Purpose
Modern work is full of commitments, deadlines, projects, launches, dependencies, and constant change. Yet most people manage their future through a combination of calendars, spreadsheets, task lists, and scattered tools that show fragments of the picture, but rarely the whole view.
The result is not a lack of information. The result is uncertainty.
Important milestones get buried. Priorities compete for attention. Teams lose sight of what is coming next. And too many people carry their plans in their heads, creating stress, distraction, and the feeling that something important might be slipping through the cracks.
At Timeline OS, we believe there is a better way.
We believe people do their best work when they can clearly see what lies ahead. When projects, commitments, milestones, and dependencies come together in a single visual timeline. When the future is no longer fragmented across dozens of tools, but visible, understandable, and actionable.
Our purpose is to give people clarity, confidence, and peace of mind.
We help individuals and teams move from uncertainty to visibility, from reactive work to intentional planning, and from mental overload to a clear horizon.
Because when you can see what's ahead, you can focus on what matters today.