
Labelbox
A data-labeling platform, plus an expert network when you need the people too.
A curated directory of data labeling and annotation vendors. Browse by data type or workforce model, read honest write-ups, and shortlist the right partner.
Hand-picked placements from vendors worth a closer look.

Sensor fusion annotation and workforce for ADAS and autonomous vehicle teams.

Sensor fusion annotation and calibration for autonomous vehicles and robotics.

A global crowd workforce for data collection and labeling across languages and formats.

Label training data with code and rules instead of tagging every item by hand.

A computer-vision data platform built for complex, regulated work like medical imaging.

An annotation platform with a marketplace of vetted labeling teams behind it.

AI-assisted labeling for vision-heavy data, plus document automation with V7 Go.

The data engine behind many frontier models, from RLHF to autonomous vehicles.
Building an AI model comes down to the quality of its training data, and most teams need a partner to label, annotate, or collect that data. This is an independent directory of the companies that do it, from platforms you run with your own team to managed workforces that handle the whole job. Every listing is an honest write-up with the data types a company handles, how the work is staffed, and a clear guide to who it fits. Browsing and comparing is free.