Top 10 Data Annotation Companies (Updated 2024)

Data annotation is the process of refining the data using labeling or transcribing methodology. It trains the AI models for the specific outcomes you want or predict.

While it’s perfectly okay to build AI models with your in-house teams, however, we strongly recommend outsourcing redundant tasks to a country with lower wages starting from under $3 per hour (for data annotation). It’s like creating a balance between in-house vs. outsourcing to make sure you are optimizing the cost.

And finding the best data annotation and AI data labeling companies comes with a struggle since you don’t want to spend hours researching, experimenting, and then choosing a top data annotation company.

We have gathered a list of the top 10 data annotation companies that you can trust and save money while outsourcing.

Our Methodology to Rank Data Annotation Companies

To list the top 10 data annotation outsourcing companies, we analyzed the following factors:

• The company should have 5+ years of experience in data annotation.
• Quality of service
• Number of clients
• What people say about it on different platforms (Quora, Reddit).
• Recurring clients of the company
• Case studies of their clients
• Price
• Affordability

Most of these factors are qualitative. Our team scaled them on a rating that ranged from 1-10, and then the cumulative score of each company was calculated. The company with the highest score has crowned the title of top data annotation company in our list.

Let’s begin the list of top data annotation companies without any further due.

1. HiredSupport

HiredSupport is one of the top data annotation companies that has experience with clients across the globe, converting raw data into actionable insights. This data annotation company helps lay the foundation so that you can train AI models. And make them smarter by accurately comprehending the input being fed into the system. Businesses can accurately annotate data which helps speed up the development process.

You can discuss the data annotation plan with experts at HiredSupport. Once everything is agreed upon, a contract will be signed, and voila, you will see the data transform your AI projects across the board. HiredSupport has diligent agents who pay close attention to details while annotating data for clients. They are available 24/7 and closely monitor the data before entering it into the system.

HiredSupport has a rating of 4.9 stars on Clutch, solidifying its position in the market. 

What Services Does HiredSupport Offer?

• Data Annotation outsourcing
• Image & video annotation
• Image labeling services
• Text annotation
• Audio annotation
• Sensor data annotation
• Key-point annotation

HiredSupport offers businesses a remote team dedicated to annotating data and documenting progress. 

They are a reliable outsourcing agency that can help you scale your operations while remaining budget-friendly. HiredSupport takes data annotation very seriously, as a company’s language learning models are based on error-free data entry. 

The best part is that you can get a free trial today without entering your credit card details. 

HiredSupport’s team can help annotate images and videos received from the business through their end-to-end encrypted channel. 

What You Need to Remember

24/7 Support: HiredSupport offers 24/7 support to businesses of varying sizes. From weekends to holidays, their agents would be dedicated to answering emails and calls for you.

Secure: When working with HiredSupport, security is guaranteed. The assets are received from businesses through encrypted channels ensuring it isn’t compromised. 

Reliable: HiredSupport has received positive feedback on platforms such as Clutch, marking its unique value proposition in the industry. 

Pricing: You can get the best data annotation outsourcing services – starting from just $3/hour.

2. Label Your Data

Label Your Data provides data annotation services specializing in video and image annotation for computer vision and natural language processing applications. 

It stands second when we compare it to other data annotations, AI labeling, and data tagging companies.

It’s one of the most diverse image annotation companies on our list. This data annotation company has its headquarters based in Wilmington, Delaware. It has been operational for more than 3 years which means that they are still relatively new in the business process outsourcing industry.

Label Your Data has a skilled team of over 200 annotation experts majorly based in Europe, LATAM, and Africa. This ensures that clients are given access to a globally trained annotation workforce. They have data annotation experts who are proficient in 55 plus languages which helps with expansion opportunities.

Label Your Data has 4.9 stars on Glassdoor. 

What Services Does Label Your Data Offer?

• Image & video annotation
• Text annotation
• Audio annotation
• Image labeling services
• Sensor data annotation
• Data classification & categorization
• Data entry
• Data collection
• Model validation

Label Your Data’s services are best suited for teams seeking a reliable and secure annotation partner to fully outsource their labeling needs.

It has expertise in various industries ranging from automotive to Fintech services. Label Your Data’s vision is to use AI to help companies scale their operations. 

What You Need to Remember

Security: Label Your Data has cleared ISO/IEC 27001:2013 certified and PCI DSS Level 1 Service Provider compliance audits.

Customizations: Label Your Data provides personalized designing and data annotation services.

Expertise: It has a workforce of 500 data annotators, which helps speed up the data entry and analysis process. 

Pricing: This solution provider doesn’t offer a free trial but has short and long-term plans based on your business needs. 

3. KeyMakr

Keymakr offers a specialized service for annotating images and videos, which is handled by their team of in-house experts who are skilled in labeling. This data annotation company’s headquarters is based in New York, NY. It was established in 2015 and has been working with clients all over the world for less than 10 years.

It stands third when we compare it to other data annotations, AI labeling, and data tagging companies.

Keymakr Studio has an in-house team of data annotation experts, who specialize in getting results for various industries ranging from automotive to waste management, helping streamline internal operations and models. When it comes to data annotation data security is important. Keymakr is careful when collecting data and its reliability is highlighted by the fact that it’s GDPR-compliant, ISO 9001, and ISO 27001 certified. It’s on the third rank of our best data annotation companies.

KeyMakr has 4.5 stars on Glassdoor.

What Services Does KeyMakr Offer?

• Image annotation
• Video annotation
• 3D point cloud annotation
• Data validation
• Semantic segmentation
• Data creation
• Image labeling services
• Data collection
• Document annotation
• Annotation tool

Keymakr caters to businesses and organizations in need of training data for their AI models. 

Their services are especially beneficial for companies lacking the resources or know-how to label their data or those needing large amounts of data for model training.

What You Need to Remember

Labeling Capacity: It can label up to 100,000 data items. 

Diverse Labeling Methods: Keymakr provides a variety of annotation options, such as bounding boxes, cuboids, polygons, semantic segmentation, and much more.

Performance Tracking: It offers performance analytics that helps monitor progress and notify managers about any issues.

4. TrainingData

TrainingData is a SaaS tool designed for CV projects, offering precise pixel-level annotation tools to ensure accurate labeling. It’s on the fourth rank of our best data annotation companies. This data annotation company has its headquarters based in Palo Alto, California.

It stands fourth when we compare it to other data annotations, AI labeling, and data tagging companies.

TrainingData makes use of Pixel Annotation Tools to train data that is later used to input information in the client’s AI system. TrainingData leverages Sculptor for precise freeform drawing capabilities. The company specializes in AI-assisted labeling, employing active learning methods to enhance data annotation accuracy and efficiency.

TrainingData has 4.1 stars on G2. 

What Services Does TrainingData Offer?

• Pixel accurate annotation tool
• Annotator performance management
• Labeling instruction management
• Image labeling services
• Data security and privacy controls

TrainingData leverages its experience in providing top-notch image and video content online to assist computer vision data scientists. This helps reduce the turnaround time on their AI projects by 10x with 95% automation. 

TrainingData aims to empower data scientists to maintain data quality right from the outset of their projects.

What You Need to Remember

Integrate Seamlessly: TrainingData works seamlessly with any cloud storage service that follows the cross-origin resource sharing (CORS) policy.

Collaboration: TrainingData’s platform allows you to set up projects and invite appropriate collaborators to join with specific roles such as reviewer, annotator, and admin.

Scalable: This solution provider allows you to label up to 100,000 images.

5. Appen

Appen provides reliable and varied data annotation services to match the changing needs of AI and ML projects. Their advanced annotation tools and machine learning systems ensure accuracy and efficiency in handling complex data tasks. This data annotation company has its headquarters based in Kirkland, Washington. It was established in 1996 and has been dealing with B2B clients for more than 20 years.

It ranks as the fifth best image annotation company on our list. Appen allows for AI and human collaboration and helps create structured data that can be used by the client to train their AI model. Once the data is developed and deployed, Appen evaluates the model performance ensuring client’s expectations were met.

Appen has a rating of 3.5 stars on Glassdoor. 

What Services Does Appen Offer?

• Text annotation 
• Speech annotation 
• Image annotation 
• Video annotation 

Appen has effectively assisted leading tech firms, demonstrating a strong history of ensuring quality and fulfilling the needs of extensive projects.

What You Need to Remember

Scope of Operations: Appen offers data annotation services to 170 plus countries and has a grasp on various industries. 

Personalization: This outsourcing service provider empowers businesses with annotation tools made by data experts.

Continuous Support: Appen offers businesses a dedicated project manager and supports 8-plus domains. 

6. Cogito Tech

Cognito Tech specializes in providing data annotation services for machine learning with a focus on emotional intelligence and natural language understanding. This data annotation company’s headquarters is based in New York, NY. Cogito Tech was found in 2014 and has been annotating data for almost 10 years now.

It stands sixth when we compare it to other data annotations, AI labeling, and data tagging companies.

They specialize in annotating digital images to train computer vision algorithms, emphasizing three key aspects: identifying and labeling objects within images, highlighting features, and outlining object boundaries. Their image annotation services support various tasks such as object detection, image segmentation, and categorization.

Cogito Tech has a rating of 3.7 stars on Glassdoor. 

What Services Does Cogito Tech Offer?

• Reinforcement Learning with Human Feedback (RLHF)
• Fine-tuning
• Red teaming
• Prompt engineering
• Data curation
• Medical annotation
• Image annotation
• Audio annotation
• Text annotation
• Video annotation
• LiDAR annotation 

Cogito Tech’s dedication to excellence and ethical standards is validated by the DataSum certification, which guarantees transparency, ethical data sourcing, and top-tier data governance practices.

What You Need to Remember

Robust Security: Cogito Tech holds certifications in EU GDPR, SOC 2 Type II, and HIPAA compliance. Additionally, it is on track to meet CCPA standards, supported by its accreditations in ISO 27001-2013 and ISO 9001.

Industries Served: This solution provider has served industries ranging from autonomous vehicles to the insurance sector. 

Constant Support: Cogito Tech offers 24/7 support with a fast turnaround time. 

7. SunTec AI

SunTec.AI stands out as a prominent data annotation outsourcing company and has over 20 years of expertise in crafting training datasets for AI and machine learning models. This data annotation company has its head office located in Laguna Beach, California. The company was formed in 2020 and is a newbie when it comes to annotating data.

SunTec.AI offers an ideal outsourcing solution for businesses looking to develop an AI model based on accurate data. Their qualified data annotators leverage advanced tools to create high-quality datasets, ensuring optimal training of ML models and attainment of desired accuracy and outcomes. It ranks as the sixth best image annotation company on our list.

SunTec.AI has a rating of 3.2 stars on Glassdoor. 

What Services Does SunTec.AI Offer?

• Image annotation service
• Video annotation service
• Text annotation service
• Data labeling service 
• Content moderation service 
• Product labeling 
• Audio transcription
• Image transcription

If you are outsourcing your data annotation services, it would reduce the burden of managing an in-house team. SunTec.AI ensures that your data is handled with established industry standards.

What You Need to Remember

Advanced Infrastructure: SunTec.AI’s team contributes to creating training data for AI/ML models, which conserves valuable time, effort, and manpower.

Security: Being an ISO/IEC 27001:2022 certified company, they prioritize adhering to international security standards when formatting data.

Industries Served: SunTec.AI has served industries ranging from technology to satellite imagery, adding diversity to its portfolio. 

8. Wisepl

Wisepl demonstrates a strong dedication to quality, customization, and effective project management, highlighting its capability to fulfill clients’ distinct needs across various industries. This data annotation company has its head office based in Kerala, India. This data annotation company was found in 2020 and has barely completed 4 years in the annotation industry.

It stands eight when we compare it to other data annotations, AI labeling, and data tagging companies.

Specifically in retail, Wisepl ensures precise, data-driven decision-making for business owners. Wisepl utilizes services such as image and video annotation employing bounding boxes or 2D and 3D cuboids. It ranks as the eighth best image annotation companies on our list.

Wisepl doesn’t have a rating on Glassdoor and Indeed. 

What Services Does Wisepl Offer?

• Image annotation
• Video annotation
• Text annotation
• Image labeling services
• Data labeling
• Sports and games annotation
• Medical annotation
• Agricultural annotation

Wisepl is known for its commitment to providing accurate and scalable annotation solutions, which has earned it a reputation as a trusted partner among leading data annotation firms.

What You Need to Remember

Language Proficiency: Wisepl offers multilingual support, which allows data to be interpreted in different languages.

Support: This outsourcing service provider offers 24/7 support and allows businesses to customize data annotation operations. 

Scope: Wisepl offers dedicated project managers; this outsourcing service provider supports more than 8 domains. 

9. SuperAnnotate

SuperAnnotate provides a data labeling solution designed for efficient AI data management with collaborative tools and annotation workflows. This data annotation company is based in San Mateo, California. SuperAnnotate was established in 2018 meaning it has industry experience of more than 5 years.

SuperAnnotate offers advanced annotation and quality assurance tools, along with capabilities in data curation, automation, native integrations, and data governance. This company empowers enterprises to cultivate datasets and establish successful ML pipelines efficiently. It ranks as the ninth best data labeling company on our list.

SuperAnnotate has a rating of 4.1 stars on Glassdoor. 

What Services Does SuperAnnotate Offer?

• Audio annotation
• Data annotation
• Project management
• Video annotation

What You Need to Remember

Integration and Compatibility: SuperAnnotate was created to work smoothly with different machine-learning frameworks and platforms. It’s compatible with well-known formats like COCO, PASCAL VOC, and others commonly used in the machine learning field.

Quality Assurance: SuperAnnotate provides tools for quality control, enabling supervisors or project managers to check annotations for accuracy and consistency.

Data Security: The platform includes integrated quality control features, enabling supervisors or project managers to check annotations for accuracy and consistency.

10. Labellerr

Labeller is an annotation service provider that helps machine learning and AI companies label their data quickly and accurately. You can take advantage of Labellerr’s services for 499 USD/month given the data is not too big. This data annotation company has its head office based in Wilmington, Delaware. It was established in 2019 which means that they have been in the data annotation industry for less than 5 years.

Labellerr offers support for various image annotation techniques, such as segmentation, object detection, polyline, key point annotation, and more. The team has the flexibility to tailor workflows for the image annotation process, incorporating features like team member onboarding, multi-level quality assurance, and efficient data management.

 Labeller has a rating of 4.7 stars on Capterra. 

What Services Does Labeller Offer?

• Video annotation
• Label GPT
• Data annotation
• Image annotation
• Text annotation
• Image labeling services

Labellerr provides a platform where users can upload their datasets and specify the annotations needed for their project, like object detection, image classification, named entity recognition, and sentiment analysis.

What You Need to Remember

Personalized workflows: Users have the option to either make their own annotation workflows or use ready-made templates that suit their project needs. This provides flexibility during the annotation process.

Scalability: The service typically provides ways to handle big sets of data and different workloads more effectively. 

Integration: The ability to integrate with well-known machine learning frameworks and APIs enables effortless incorporation of annotated data into the AI/ML development process.

Conclusion

In conclusion, exploring the top data annotation companies and data labeling companies has revealed multiple options for businesses seeking efficient and accurate annotation solutions. 

Each company brings unique strengths and capabilities, catering to diverse industry needs. 

However, one company stands out amidst these choices for its commitment to excellence and client satisfaction.

I urge you to try out HiredSupport’s 7-day free trial of their data annotation services. HiredSupport has consistently demonstrated top-notch quality in data annotation, leveraging advanced technologies and a skilled workforce to deliver precise and timely results.