I can't describe my startup in one sentence

A one-sentence description is a compression exercise. You're not summarizing everything you do. You're choosing the single most compelling thing to say first.

Why compression is hard

Your startup probably does five things. You've been living inside it for months. Every feature feels important, every use case feels relevant. So when someone says "tell me in one sentence," your brain panics and tries to cram it all in.

The result is a run-on sentence with three commas, two "and also" clauses, and a listener who retained none of it.

The word economy rule

Great one-liners use 10 to 15 words. Every word earns its spot. If a word doesn't change the meaning, cut it.

Bloated: "We're building an innovative platform that leverages artificial intelligence to help early-stage entrepreneurs create compelling brand messaging."

Compressed: "We help founders turn a messy idea into a clear pitch."

The second version is 12 words. Someone can repeat it back to you without notes. That's the test: can your listener repeat it to someone else accurately?

An EdTech startup that found its sentence

Before: "We're an adaptive learning platform using machine learning algorithms to personalize educational content delivery for K-12 students across multiple subject areas, with real-time progress tracking for parents and teachers and integration with existing school LMS systems."

After: "We help kids who are falling behind in math catch up, without a tutor."

Forty-two words became fourteen. The original listed technology, features, and integrations. The compressed version named a specific child (falling behind in math), a specific outcome (catch up), and a specific differentiator (no tutor needed).

How to compress yours

Write your full description. Circle the one audience, one problem, and one outcome that matters most. Delete everything else. Read it aloud. If it takes more than one breath, cut more.

One-liner vs. elevator pitch vs. tagline

These are different tools. A one-liner is your core description (12 to 15 words). An elevator pitch is the 30-second version with context and proof. A tagline is a memorable phrase that reinforces positioning but does not need to explain the product. You need the one-liner first. The others build on it.

Testing your one-liner

Say it to five people outside your industry. Ask them to repeat it back. If they can repeat it accurately, it works. If they paraphrase it into something different, the original was not sticky enough. The best one-liners are [specific enough to be memorable](/answers/what-should-my-homepage-say) and simple enough to repeat.

servo asks you the questions that force this compression, then writes the sentence for you.