TEXT ANNOTATION SERVICES

Power Up
Your AI's Potential

High-quality text annotation services for NLP tasks and LLM training. Delivered by native-language experts across multiple languages and domains.

Text Annotation Services for NLP & AI Training

“High-Quality Data = High-Performing Models.” We know it. 

Our human-powered text annotation services ensure your data is accurately labelled and categorised for NLP tasks and LLM training workflows.

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Text Classification

Enhance your AI’s data understanding and analysis capabilities for automated organisation and routing.

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Named-Entity Recognition (NER)​

Improve AI language comprehension and data linking to enable faster information extraction and analysis.

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Sentiment Analysis

Gain insights into customer attitudes and emotions to make data-driven decisions and improve customer satisfaction.

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Part-of-Speech (POS) Tagging

Enhance language processing and grammatical analysis for accurate text comprehension and improved sentence structure analysis.

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Audio-to-Text Transcription

Train AI models for superior speech recognition and transcription accuracy to enable more robust AI-driven solutions.

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Handwritten Transcription

Enhance AI’s ability to process and utilise unstructured handwritten information to facilitate document digitisation and text analysis.

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Data Collection and Creation Services

Tailored data creation, through our collaboration with Bitext, combines synthetic text generation and expert human curation. This ensures your LLM is exposed to diverse, high-quality data, enhancing its real-world performance.

Let’s Talk About Your Text Annotation Needs

Let’s connect for a brief call to understand your requirements and how we can support your AI training.

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Industries We Serve

We work with trained data labellers and native speakers with domain expertise aligned to your industry and use case.

Multilingual Text Annotation

Enable your machine learning and NLP systems to understand and interpret human language across different languages and regions. The languages we support include:

For other languages and variants, get in touch.

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Why Partner with Optimational

Guaranteed Accuracy
and Reliability

Train high-performing AI models with human-verified datasets that meet strict quality standards.

Human-in-the-Loop
Approach

Unlock stronger AI performance with human-powered annotations. Our experts ensure accuracy and relevance for optimal training.

Scale Up
with Ease

Seamlessly scale your annotation needs. We assemble the perfect data labelling team—big or small.

Data Security
You Can Trust

Rest assured that your data is handled with confidentiality and in line with data protection requirements.

Iterative Feedback
and Adaptable QA

Continuously improve your AI with feedback loops and adaptable quality control. We ensure accuracy, even for subjective tasks.

Dedicated Team,
Maximum Results

Partner with a dedicated team focused on your LLM’s success. Maximise performance with our expertise and support.

CONTACT US

Ready to Enhance Your AI Training?

Choose the best way to get in touch with our team:

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Some Questions You May Have

We follow a structured, multi-step quality assurance process to ensure accuracy, consistency, and linguistic reliability:

  • Clear annotation guidelines defined upfront and refined throughout the project.

  • Native-speaker review processes to ensure linguistic and cultural accuracy.

  • Inter-annotator agreement (IAA) metrics to measure consistency and identify discrepancies.

  • Regular calibration sessions to standardise annotation approaches and resolve edge cases.

  • Linguistic oversight from specialists to validate outputs and ensure guideline adherence.

  • Continuous feedback loops incorporating client input and model performance insights.

This approach allows us to maintain high-quality annotations, even for complex, subjective, or multilingual datasets.

Text annotation involves experts labelling and categorising text data, enabling AI models to understand context and meaning. Some methods include:

  • Text classification: Analyses and categorises text into groups for organisation and filtering.
  • Named-entity recognition: Identifies and classifies specific entities in text for easier information extraction.
  • Part-of-speech tagging: Labels words with their grammatical roles to aid in grammar analysis.
  • Sentiment analysis: Determines the emotional tone of texts to understand attitudes and opinions.
  • Audio transcription: Converts spoken words from audio files into searchable text for accessibility and analysis.
  • Handwritten transcription: Digitises handwritten content for easier editing, sharing, and archiving

The cost depends on project specifics like language, complexity, and turnaround time.  Contact us for a tailored quote!

Yes! We leverage a network of human annotation experts with experience in various industries, ensuring relevant and accurate annotations for your project’s specific needs.

Here’s how we safeguard your information:

  • Secure Platforms: We utilise secure platforms for data storage and access, employing encryption, and access controls.
  • Non-Disclosure Agreements (NDAs): All data-labellers sign NDAs to ensure confidentiality.
  • Limited Access: Only authorised personnel can access your data, with access restricted based on specific roles and needs.
  • Data Deletion Options: We offer options for secure data deletion upon project completion if desired.

Yes, integration with your existing AI platform is often possible! Our team has experience integrating with various platforms. We work collaboratively to establish a seamless workflow that fits your specific system.

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