Text Annotation Services

NLP Data at Scale

NLP Data at Scale

Structured text annotation services for NLP, chatbot training, document classification, and knowledge graph construction across 30+ languages.

Text Annotation Services

  • Named entity recognition (NER) & tagging
  • Relation extraction & co-reference resolution
  • Intent & entity annotation for NLU models
  • Sentiment, tone & subjectivity labelling
  • Text classification & topic modelling
  • Question-answer pair generation

Why Choose Our Text Annotation Services?

Certified Experts

Industry-certified professionals with deep domain expertise delivering consistently high-quality results.

Fast Turnaround

Flexible SLAs with express delivery options — 24/7 operations ensure your deadlines are always met.

ISO 27001 Secure

Your data is protected with enterprise-grade security, NDAs, and strict access control protocols.

Cost-Effective

Reduce operational costs by 40–60% compared to in-house teams without sacrificing quality.

500
Projects Delivered
98
% Accuracy Rate
150
Global Clients
24
7 Support

Frequently Asked Questions

We support CoNLL, IOB/BIO, BRAT, JSON-LD, and custom schemas. We integrate with annotation tools like Prodigy, Doccano, and Label Studio.
Yes. We recruit annotators with domain expertise in legal, medical, financial, and technical texts.

Industries We Serve

Our Text Annotation Services solutions are tailored for diverse industries across India, USA, UK, Australia and beyond.

NLP / Conversational AI
Sentiment Analysis
Healthcare AI
Legal Tech
Finance
E-Commerce
Customer Service
Media
Search Engines
HR Tech

How It Works

A structured, transparent process that ensures quality, speed and complete client satisfaction.

01
Text Dataset Receipt
Step 1 of the Text Annotation Services delivery process.
02
Annotation Guidelines Setup
Step 2 of the Text Annotation Services delivery process.
03
Entity & Intent Labelling
Step 3 of the Text Annotation Services delivery process.
04
Multi-layer Review
Step 4 of the Text Annotation Services delivery process.
05
Inter-annotator Agreement Check
Step 5 of the Text Annotation Services delivery process.
06
Final Dataset Delivery
Step 6 of the Text Annotation Services delivery process.

Entity recognition accuracy improved from 78% to 94% using Vortexsoft's annotated data.

S
Sophia L., NLP Scientist
Vortexsoft Client

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