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The Free No-Code NLP Platform

Annotate Text & Images
AI Assisted Annotation
Train & Tune NLP Models
Models, Rules, and Prompts Hub
Manage Projects & Teams
Enterprise Security & Privacy

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Best in class Text Annotation Tool

	NLP Lab	LabelStudio	LabelBox	LightTag	TagTog	Prodigy
Who is the Free version for?	Teams looking for an enterprise-grade, proven, full-featured data labeling platform.	Used by individual data scientists and small annotation teams.	Small teams and individuals looking to test capabilities or validate early-stage experiments.	Individual users	Open: Only public labels & datasets.	No Free version available
Free edition limitations:	Unlimited Features Free Forever	Limited to a single organization and workspace	Limited to 10k annotations	Limited to single user & 500 labels/month	Limited to public datasets	No Free version available
Labeling Features:
Text labeling	Free	Free	Free	Free	Free	Paid
Image labeling	Free	Free	Free	N/A	N/A	Paid
Video labeling	Free	Free	Free	N/A	N/A	Paid
Audio labeling	Free	Free	N/A	N/A	N/A	Paid
Multi-lingual text labeling	Free	Free	N/A	Free	Team	Paid
Span annotations & overlapping entities	Free	Free	Free	Free	Free	Paid
Label relations & dependencies	Free	Free	Free	Free	Free	Paid
Projects & Teams:
Multiple projects	Free	Free	Free	Team	Free	Paid
Project grouping	Free	N/A	N/A	N/A	N/A	N/A
Project searching/filtering	Free	N/A	Free	N/A	N/A	N/A
Full API access	Free	Free	Pro	Team	Team	Paid
Task assignment	Free	Enterprise	Free	Team	Free	N/A
Task tagging	Free	N/A	N/A	Team	N/A	N/A
Task comments	Free	N/A	Free	N/A	N/A	N/A
Role based task status	Free	N/A	N/A	N/A	Free	N/A
Duplicate tasks detection	Free	N/A	N/A	N/A	N/A	N/A
Task searching/filtering	Free	Free	N/A	Team	Free	N/A
Guidelines	Free	Free	Free	Free	Team	N/A
Feedback & Comments on completions	Free	N/A	Free	N/A	N/A	N/A
Consensus Analysis/IA Agreement	Free	Enterprise	Pro	Team	Free	N/A
Quality review workflows	Free	Enterprise	Pro	Team	Team	Paid
Performance Dashboards	Free	Enterprise	Free	Team	Free	N/A
QA & collaboration	Free	Enterprise	Pro	N/A	N/A	N/A
AI-Assisted Text Labeling
Project configuration based on existing models and rules	Free	N/A	N/A	N/A	N/A	Paid
Rule editing interface	Free	N/A	N/A	N/A	N/A	N/A
Pre-annotations with model assisted labeling	Free	Support for 3rd party ML integration	Enterprise	Team	Enterprise	Paid
Active learning: auto-retrain models on the fly	Free	Enterprise, Support for 3rd party ML integration	N/A	N/A	Pro	Paid
Transfer learning: start from pre-trained models	Free	N/A	N/A	N/A	N/A	Paid
Bring your own models	Free	Support for 3rd party ML integration	Enterprise	Team	Free	Paid
Precision/Recall Reports for Trained Models	Free	N/A	N/A	N/A	N/A	Paid
Model Hub Integration	Free	N/A	N/A	N/A	N/A	N/A
Security & Privacy:
Role-based access controls	Free	Enterprise	Pro	Team	Enterprise	N/A
Role-based views	Free	Enterprise	N/A	Team	Enterprise	N/A
Annotation Versioning	Free	N/A	N/A	N/A	N/A	N/A
Full audit trail	Free	N/A	N/A	Enterprise	Enterprise	N/A
LDAP/AD integration - User import/Login	Free	Enterprise	Enterprise	Enterprise	Enterprise	N/A
Single Sign On - User import/Login	Free	Enterprise	Pro	Enterprise	Enterprise	N/A
On-Premise / Air-Gap Deployment	Free	Enterprise	Enterprise	Enterprise	Enterprise	Paid
Annotation on PDF and image documents:
Support for multi-page scanned or generated PDFs	OCR	N/A	N/A	N/A	Pro	N/A
Selectable PDFs	OCR	N/A	N/A	N/A	Pro	N/A
Scanned PDFs	OCR	N/A	N/A	N/A	N/A	N/A
Support for image annotation (png)	OCR	N/A	N/A	N/A	N/A	N/A
Text search in image documents	OCR	N/A	N/A	N/A	N/A	N/A
Multi line chunk annotations	OCR	N/A	N/A	N/A	N/A	N/A
Sticky token selection	OCR	N/A	N/A	N/A	N/A	N/A
Custom region annotation	OCR	N/A	N/A	N/A	N/A	N/A
Relations annotation	OCR	N/A	N/A	N/A	N/A	N/A
Zoom features	OCR	N/A	N/A	N/A	N/A	N/A
Healthcare features:
Pre-annotations with rules & regex	Healthcare	N/A	N/A	N/A	N/A	Paid
Pre-annotations with dictionaries	Healthcare	N/A	N/A	N/A	Team	Paid
Automatic detection of 100+ clinical and biomedical entities	Healthcare	N/A	N/A	N/A	N/A	N/A
Automatic detection of clinical assertion status detection (negation detection)	Healthcare	N/A	N/A	N/A	N/A	N/A
Automatic detection of 30+ healthcare-specific relation extraction	Healthcare	N/A	N/A	N/A	N/A	N/A
Automatic entity normalization (coding) to 10+ medical terminologies	Healthcare	N/A	N/A	N/A	N/A	N/A
Transfer learning for named entity recognition models	Healthcare	N/A	N/A	N/A	N/A	N/A
Ready to use healthcare-specific word, chunk, and sentence embeddings	Healthcare	N/A	N/A	N/A	N/A	N/A

Read more on how to choose the best text labeling tool for your needs here.

Editions Compared

COMMUNITY

FREE

Annotation Lab is a Free tool, with support for unlimited projects, users, documents, community models, teams, analytics, workflows, audit, No-Code Model Training & Active Learning.

Support for text, image, video, and audio annotations
Multi-lingual text labeling
Span annotations & overlapping entities
Label relations & dependencies
Unlimited projects, users, documents, models
Project grouping
Project searching/filtering
Full API access
Task assignment
Task tagging and comments
Role-based task status
Duplicate tasks detection
Feedback & Comments on completions
Consensus Analysis/IA Agreement
Quality review workflows
Performance Dashboards
Project configuration based on existing models
Pre-annotations with model-assisted labeling
Active learning: auto-retrain models on the fly
Transfer learning: start from pre-trained models
Bring your own models
Precision/Recall Reports for Trained Models
Model Hub Integration
Role-based access control
Annotation Versioning
Full audit trail
LDAP/AD integration – User import/Login
On-Premise / Air-Gap Deployment

HEALTHCARE

FREE trial

The Healthcare edition offer access to pre-trained healthcare models published on the NLP Models Hub.

All features from the Community library
Pre-annotations with rules & regex
Automatic detection of 400+ clinical and biomedical entities
Automatic detection of clinical assertion status detection (negation detection)
Automatic detection of 60+ healthcare-specific relation extraction
Automatic entity normalization (coding) to 10+ medical terminologies
Transfer learning for named entity recognition models
Ready to use healthcare-specific word, chunk, and sentence embeddings

VISUAL

FREE trial

The visual edition offers access to OCR features for image preprocessing and digitization, as well as to Visual NER based preannotation and model training.