The Text Annotation Tool for Teams

All growing NLP teams run into the same fundamental problem.

Not enough labeled data.
Not enough control of data quality.
No infrastructure to improve with.
The good news ?

LightTag makes in house text annotation (current) easy.

Why Choose LightTag?

Annotate faster, more accurately and at scale

Easy to use

Your expert annotators are their to label. LightTag's interface ensures they can focus on labeling and do so as quickly and accurately as possible.


LightTag supports named entity recognition, single and multi class document classification as well as phrase based and dependency based structures.

Language Agnostic

Annotate any language including RTL and CJK languages. LightTag makes no assumptions about your vocabulary or tokenization scheme and you can annotate phrases and subwords natively.

Intelligent Automation

LightTag learns from your annotators as they work, generating suggestions for further annotations. By combining reinforcement and deep learning methods LightTag's models converge to a high accuracy fast!

It Just Works ™

No software to install. No Servers to configure, No network ports to open. Enjoy the peace of mind of high availbility, daily data backups and an intuitive management interface without writing one line of code.

Built for teams

LightTag makes annotating with a team simple. As a project manager you define how many annotators you'd like to work on each example.
LightTag will automatically allocate work accordingly. That's it. No need to assign tasks to labelers and no need for labelers to find the next piece of work.

Enterprise Ready

Your data is sensitive and can't go to the cloud. Wether you need to be HIPAA compliant or are dealing with proprietary records, you must run your labeling projects on premise. LightTag is designed for you. Our on premise offering includes everything in the SaaS as well as enterprise necesetieis such as SSO, Active Directory integrations and immutable audit logs. And best of all, it still Just Works ™




per user per month

  • Your own private, isolated LightTag server
  • Custom subdomain (
  • API Access
  • Manage Multiple Projects Concurrently
  • Daily backups + 30 day retention
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On premise & large teams

  • Everything in Proffesional plus
  • On site installations
  • Integrate your own models
  • Concierge Onboarding
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Our Team

Ilan Bar Magen


Tal Perry

Founder and CEO

Maria Solowejtschik