Labelbox

Labelbox is a data labeling and AI data platform covering annotation, data curation and model evaluation. Pricing details come from third-party sites, not Labelbox's own page, and they disagree in places. Most sources say the free plan includes 500 LBUs, Labelbox's usage units, per month, with one review also listing 30 users and 50 projects and model-assisted labeling, while another says the free tier lacks SSO, Monitor and a quality guarantee. Toolradar lists 5 users and 5,000 labeled rows, which doesn't match the others. Paid use is usage-based at about $0.10 per LBU, and Catalog, Annotate and Model each consume a different number of LBUs per data row, so cost depends on the products and volume.

Enterprise is custom-priced and described as including multiple workspaces, stronger security and a labeling quality guarantee. Managed services are quoted on request: one source says Standard Services, Alignerr Services and Alignerr Connect are all priced individually with volume discounts, and a separate listing gives a starting rate of $10 an hour for labeling services, which I could not confirm. Because LBU consumption is the main variable, estimate your monthly rows and the products you will use before committing. If you only need basic annotation, a free tool may be enough, while Labelbox earns its price when you need managed labeling and evaluation workflows.

Labelbox suits ML teams that want a commercial platform with managed labeling options. Compare Label Studio, Scale AI and Snorkel AI. Browse the MLOps & Infrastructure tools directory for more.

Data labeling at scale

Platform.

Managed labeling and evaluation

Alignerr.

Is there a free plan?

Yes, about 500 LBUs a month.

LBU price?

About $0.10.

Enterprise pricing?

Custom.

What is Alignerr?

Managed expert labeling, priced on request.