Text & NLP Annotation

Text Annotation and NLP Data Services for Language AI

From sentiment analysis to named entity recognition, Centric Labs delivers the human-labeled text datasets that power production NLP systems. Our linguist-grade annotators handle complex language tasks across 30 plus languages, providing the nuanced understanding that automated labeling tools miss. Whether you are building chatbots, training document understanding models, or fine-tuning LLMs, our text annotation services deliver the labeled corpora your models need.

Start NLP Annotation PilotView Text Services

Full-Spectrum Text and NLP Annotation

Named entity recognition across standard and custom entity types. Sentiment analysis and opinion mining at document, sentence, and aspect levels. Text classification and categorization with multi-label support. Relation extraction and knowledge graph construction. Intent classification and slot filling for conversational AI. Document annotation including table extraction, section classification, and form field mapping. Coreference resolution and linguistic annotation for advanced NLP research.

Get a QuoteView Annotation Guidelines

What you get

  • Dedicated managed teams, no anonymous crowd
  • Multi-stage QA with measurable SLAs
  • Secure workflows designed for enterprise data
  • Fast pilots with clear success criteria

Multilingual NLP Expertise Including Arabic, Urdu, and Low-Resource Languages

Our annotator network includes native speakers across 30 plus languages with particular depth in Arabic dialects and Modern Standard Arabic, Urdu and Hindi, Southeast Asian languages, and European languages. For each language, we source annotators with linguistic training, develop language-specific annotation guidelines, and validate output against native-speaker benchmarks.

Explore Multilingual ServicesContact Language Team

What you get

  • Dedicated managed teams, no anonymous crowd
  • Multi-stage QA with measurable SLAs
  • Secure workflows designed for enterprise data
  • Fast pilots with clear success criteria

Get Expert Text Annotation for Your NLP Pipeline

Tell us about your NLP use case. Our team will recommend the optimal annotation approach, provide a detailed quote, and deliver a pilot dataset within one week.

Start Free PilotBook Technical Call

What you get

  • Dedicated managed teams, no anonymous crowd
  • Multi-stage QA with measurable SLAs
  • Secure workflows designed for enterprise data
  • Fast pilots with clear success criteria
Explore more services

Image Annotation

Bounding boxes, segmentation, keypoints and OCR labeling.

Learn more

Video Annotation

Tracking, temporal events, and action labeling at scale.

Learn more

Text & NLP Annotation

NER, classification, intent, and instruction datasets.

Learn more

LLM Training Data

Fine-tuning corpora, preference pairs, and eval sets.

Learn more

RLHF & Human Feedback

Preference ranking, safety, and alignment pipelines.

Learn more

Synthetic Data Generation

Fill gaps in rare classes and edge cases safely.

Learn more
Next step

Ready to validate quality and security in a pilot?

We will scope a small, measurable dataset, define acceptance criteria, and stand up a managed team fast.