Data labeling
for natural language

Leverage human insight to extract information from natural language data.
Power your NLP algorithms with datasets of any size.

Get more out of your NLP training data with human annotation

Natural language processing (NLP) requires vast amounts of data to train AI to interpret human language. But data quality is just as important as quantity.
NLP training data with human insights can improve the accuracy, robustness, and interpretability of your NLP models.
With Toloka, you can build a predictable pipeline of high-quality training data that impacts your NLP algorithms.

Annotations we support

Toloka handles almost any input data for NLP data labeling: text, audio, image, or video. Our platform supports data annotation for named entity recognition, sentiment analysis, speech recognition, text and intent classification, text recognition, and more.

Why Toloka

  • ML technologies
    • One platform to manage human labeling & ML
    • Prebuilt scalable infrastructure for training and real-time inference
    • Flexible foundation models pre-trained on large datasets
    • Automatic retraining and monitoring out of the box
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  • Diverse global crowd
    • 100+ countries
    • 40+ languages
    • 200k+ monthly active Tolokers
    • 800+ daily active projects
    • 24/7 continuous data labeling
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  • Crowdsourcing technologies
    • Advanced quality control and adaptive crowd selection
    • Smart matching mechanisms
    • 10 years of industry experience and proven methodology
    • Open-source Python library for aggregation methods
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  • Robust secure infrastructure
    • Privacy-first, GDPR-compliant focus on data protection test
    • ISO 27001-certified
    • Multiple data storage options, Microsoft Azure cloud
    • Automatic scaling to handle any volumes
    • API and open-source libraries for seamless integration
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For developers

  • API
    Our open API gives you the freedom
    to integrate directly into any pipelines
  • Python SDK
    Our Python toolkit covers all API
    functionality to give you the full
    power of Toloka
  • Java SDK
    Our Java client library provides a lightweight
    interface to the Toloka API that works
    in any Java environment


Have an NLP project in mind?

Take advantage of Toloka technologies. Chat with an expert to learn how to get reliable training data for machine learning at any scale.