What is Linguistic Annotation?
Let Lionbridge annotate your data and provide your machine learning models with a solid ground truth.
Why use Lionbridge for Linguistic Annotation?

Whether you require a one-off linguistic annotation solution, a platform to annotate your data, or ongoing annotation services, Lionbridge is your home for linguistic annotation outsourcing.
- 500,000+ Contributors
- 300+ Languages
- 20+ Years of experience
Quality
Our established quality assurance system features built-in validation, spot-checking, regular performance evaluations, and a worker seniority system to ensure the highest quality of data production.
Multilingual Experts
With a multicultural and multilingual crowd, Lionbridge is a leading linguistic annotation company. Our curated staff can accurately annotate your content in the language of your choice from one of our 300 supported languages.
Customizable Workflows
Need things done in a specific way under strict guidelines? We can work with you to make sure our team of experts gets your project done under your requirements and within your timeline.

Our Linguistic Annotation Services
Part of Speech Tagging (POS Tagging)
POS tagging, sometimes called grammatical tagging, is the process of labeling words in a line of text based on their function and relationship with adjacent words in the text.
Phonetic Annotation
Our staff meticulously labels the intonation, stress, and natural pauses in speech within your corpus.
Semantic Annotation
The annotation of word definitions, especially for homophones within the text or audio corpus.
Keyphrase Tagging
The location and annotation of relevant keywords or keyphrases in your text or audio data.
Discourse Annotation
The linking of anaphors and cataphors to their antecedent and postcedent subjects.
Ex: I dropped the glass. It shattered instantly.
How it Works

1. Project set-up
Our team will work with you to develop a custom solution based on your project objectives and timeline.


2. Production
Our crowd of multilingual experts get to work creating, annotating, or validating your data.


3. Delivery
Our project managers check, package, and format the data before being sent to you for final approval.

Linguistic Annotation Solutions We Serve
Chatbots & Virtual Assistants
Chatbots and virtual assistants rely on various NLP elements.
Use Lionbridge’s intent recognition, intent classification, and intent variation services to provide your algorithms with high-quality training data.
Search Engines
The search engine is often the first element users interact with on your site.
Lionbridge can evaluate your search engine results, titles, captions, and other elements to ensure your users are getting the best possible search experience.
Spam Filters
For automated spam filters and other content moderation solutions, Lionbridge can provide lexicons and aid in the creation of linguistic rules and grammar structures in various languages.
Use our services to create custom datasets to train your models to identify potentially sensitive or harmful content.
Machine Translation
With 20 years of specialization in linguistics and translation, Lionbridge can provide lexicons and grammar foundations for over 300 languages and dialects.
Use our multilingual crowd to provide your automated translation model with a solid ground truth.
WE PROVIDE SOME OF THE WORLD'S LARGEST COMPANIES WITH THE BEST LINGUISTIC ANNOTATION SERVICES
Linguistic Annotation Services Pricing
How much do linguistic annotation services cost?
The Lionbridge platform streamlines much of the annotation process, allowing us to offer the most cost-effective linguistic annotation solutions in the industry.
Contact us to get a free estimate for your project.
- Account Manager
- Project Management
- 24/7 Support
- API
- NDA
- Volume pricing
- Custom reporting
- Enterprise-grade SLAs
- Custom invoicing
- Consulting services

Multilingual Linguistic Annotation Services
Lionbridge provides professional linguistic annotation services in over 300 languages. Some of our most popular languages include:
- Chinese linguistic annotation
- Dutch linguistic annotation
- French linguistic annotation
- German linguistic annotation
- Italian linguistic annotation
- Japanese linguistic annotation
- Portuguese linguistic annotation
- Spanish linguistic annotation