Top 10 Data Annotation Companies (Updated 2024)

Data annotation is the process of refining the data using the methodology of labelling or transcribing. 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 right data annotation company also comes with a struggle since you don’t want to spend hours while researching, experimenting and then choosing a top company.

We have gathered a list of 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 an experience of 5+ years 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 ranges from 1-10 and then the cumulative score of each company was calculated. The company with the highest score stands at the top, and the subsequent list follows it.

HiredSupport

HiredSupport is a leading data annotation company that has experience with clients across the globe, converting raw data into actionable insights. 

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

What services does HiredSupport offer?

• Data Annotation
• Data Labelling
• Data processing
• Live chat support
• Email support
• Helpdesk and ticket support
• Outsourced Customer Support
• Amazon Store Support
• Data Entry
• eCommerce Support
• Lead Generation
• SaaS Support
• Shopify Store Support
• Transcription
• Virtual Assistants
• Voice Support

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 having to enter 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 hire data analysts from HiredSupport under $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. 

Label Your Data has 4.9 stars on Glassdoor. 

What services does Label Your Data offer?

• Image & video annotation
• Text annotation
• Audio annotation
• 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.

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
• 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.

TrainingData has 4.1 stars on G2. 

What services does TrainingData offer?

• Pixel accurate annotation tool
• Annotator performance management
• Labeling instruction management
• 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.

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.

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.

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.

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

What services does Wisepl offer?

• Image annotation
• Video annotation
• Text annotation
• 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.

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.

 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

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 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, amidst these choices, one company stands out 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.