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June 2, 2026
Launch
What's new

New features

Sign up for free

Moonbounce is now open to everyone. You can create a free account in a couple of minutes. The free plan includes every feature, and your first 10,000 reviews are on us. See Plans & Pricing for details.

Get classifying in minutes

New accounts land in our reimagined label-first experience. You start from a single label: a concept you want to detect, like “Harassment” or “Spam.” Describe in plain language what should and shouldn’t match, and it runs against real content right away. Naming what you care about is all it takes to start classifying.

Test, publish, and integrate with confidence

Every label has its own set of examples, so you can test it against real content and refine until it’s right. Your work saves automatically as you go. When a label is ready, you publish a version, which is a snapshot that stays fixed. Send that version to the evaluate API and production will behave the way it did in testing. Learn more in Building with Labels.

Improve labels from real production traffic

The Content Feed shows what your labels are matching in production. Review real results, find the edge cases, and pull them straight into a label’s examples to sharpen your next version.

Get started even faster with our Label Library

A built-in tour walks you through your first label, and the Label Library offers pre-built templates for common harms to give you a head start.

Keep an eye on usage

The new Usage page shows how much you’ve evaluated, broken down by label, with a reviews-remaining indicator.Coming soon: a Pro plan for teams that outgrow the free tier, with more capacity and higher limits and no enterprise contract.