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AI Annotation and Labeling
AI Annotation and Labeling
Product
Open-source annotation tool for text classification, sequence labeling, and sequence-to-sequence NLP tasks.
Data labeling platform built for NLP researchers with expert-quality human annotation and quality control.
Headquarters
Tokyo, Japan
San Francisco, California
Company size
2-10 employees
11-50 employees
Plan
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Free options
Free plan, Free trial
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Source updated
Oct 21, 2026
Oct 21, 2026
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AI Annotation and Labeling
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