Unlock the Power of Three with Threeby
In a world of too much information and clutter, turn any topic, text, or webpage into clear, structured insights. Threeby applies the Rule of Three using a purpose-built system of mental models to generate a clear, curated three-point summary you can refine, save, and share.
From raw input to usable insight—in seconds
1. Start with anything
Enter a topic, paste text, or drop in a URL. Threeby works with any input.
2. Threeby applies the framework
Threeby applies the three-part framework you decide and generates a concise 3×3 insight.
3. Refine
Edit lightly or deeply. Keep what matters. Remove what doesn't. You're in control!
4. Save or share
Store the Threeby in your private catalog—or publish it to the global catalog.
Featured Insights
Explore popular Threebys hand-picked by our team
My Three Inspirations Behind Threeby: Brevity, Frameworks, and Knowledge Compounding
Inspired by Seth Godin’s clarity, Shane Parish’s frameworks, and Ryan Holiday’s discipline of collecting wisdom. Threeby turns ideas into lasting knowledge.
The Rule of Three: Enhancing Thinking, Decision-Making, and Communication
The Rule of Three is a powerful framework that enhances cognitive processing, streamlines decision-making, and improves communication clarity by structuring information into triads, making concepts more memorable and actionable.
Investing $10 Trillion in AI for Real-World Impact
John Hanke, founder and CEO of Niantic Spatial Inc, argues in this opinion piece in The Information, for a $10 trillion investment in AI to enhance real-world applications rather than just entertainment, emphasizing the need for AI to address essential human needs across various industries.
Discover the Public Library
Explore a growing collection of shared Threebys from the community. Find insights on topics that matter to you, copy summaries to your library, and learn from how others structure their thinking.
You Choose Your Mental Framework
Three Points
Break down any topic into three key insights or arguments.
What/So What/Now What
Understand the situation, its implications, and next steps.
Problem/Analysis/
Recommendation
Identify issues, analyze root causes, and propose solutions.
Past/Present/Future
Examine historical context, current state, and future possibilities.
Why Threeby?
Simple & Memorable
Threeby forces ideas into three clear parts—making them easier to understand, remember, and explain. No long documents. No mental sprawl.
Versatile & Practical
Use Threeby for strategy, decision-making, learning, writing, feedback, or reflection. If it's worth thinking about, it can be structured.
Built on Proven Mental Models
From What → So What → Now What to Past → Present → Future, Threeby draws from frameworks people already trust—then applies them consistently.
Intentionally Designed, Not Just Generated
Threeby doesn't rely on generic prompts or raw AI output. Every Threeby is created using a purpose-built thinking system—a set of mental models and deliberate decisions designed to mirror strong thinking, with users always in control.
Some Threebys are lightly refined.
Some are deeply shaped.
All are produced through the same underlying system.
That intentional design is the difference.
Built for people who make decisions
Writers, Researchers & Thinkers
Consultants & Strategists
Anyone who needs clarity—fast
Think Better. Decide Faster. Communicate Clearly.
With Threeby, clarity comes in threes.
Transform how you process information. Start creating structured insights in seconds.