YouTube Title CTR Predictor

Predict click-through before you publish

Rate any YouTube title as HIGH, MEDIUM, LOW, or POOR likely CTR. Test before you commit.

Primary use cases

Title A/B testing
Thumbnail/title pairing
Pre-publish optimization

Run this on your prompt →Try the classifier live

Why you can’t just prompt-engineer this yourself

The evolution story

Ember learned the structural patterns of high-CTR titles (specificity, curiosity gap, credibility) through generations of selection pressure. Outperforms off-the-shelf prompts by 34% relative.

Live demo

Try Ember — Gen 1.0

0/8000 characters

Free trial: 10 runs across 7 days · No credit card · No signup needed to start

Evolutionary lineage

Ember is a Gen 1.0 agent

1.0

Generation 1.02026-04-14

Initial evolved release. 97% holdout accuracy on 30-sample blind test.

Measured accuracy: 97%

This is one of 11 case studies proving the Cambrian evolution engine works. Your prompt can follow the same arc.

Want these numbers on your own prompt?

Bring your production prompt and a labeled dataset. We’ll evolve it the same way we evolved Ember. First evolution is free.

Evolve my prompt →