Unlock the Power of Three with Threeby
In a world of too much information, turn any topic, text, or webpage into a clear three-point summary—grounded in current web sources you can verify. Threeby applies the Rule of Three through a purpose-built system of mental models, then lets you 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 choose and generates a concise 3×3 insight—grounding topics in current web sources so the facts stay fresh.
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
Jeff Bezos' Project Prometheus: Revolutionizing Physical AI
Project Prometheus, led by Jeff Bezos, aims to innovate physical AI, enhancing automation and efficiency across industries. This initiative could redefine how businesses operate and interact with technology.
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.
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
Five proven structures shape how your summary is organized.
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.
Claim/Critique/
Conclusion
Stress-test an idea: the prevailing claim, the strongest counterarguments, and a balanced verdict.
Then make it yours with Mindset
Set your analytical lenses once on your profile and every summary is colored by how you think—same facts, same structure, your perspective on the emphasis.
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, Grounded in Real Sources
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.
And it isn't frozen in time: topic summaries are grounded in current web data, and every cited source is listed so you can verify the facts yourself.
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.