Top Data Annotation Companies

A machine learning model is only as accurate as the labels it learns from. Data annotation services companies supply those labels at volume: boxes, polygons and masks on images, object tracking across video frames, 3D cuboids in LiDAR point clouds, entities and intents in text, transcripts and speaker turns in audio, and preference rankings and written responses for training large language models. AI teams outsource it when in-house labeling cannot keep up, when they need domain experts such as radiologists or linguists, or when a new model needs a large training set.

Compare data annotation providers here on the label types they have delivered at scale, how they measure quality, and where and how your data is handled.

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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

549 Companies

List of the Best Data Annotation Services Agencies

Shedara
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Shedara is a consulting firm that specializes in practical digitalization and AI integration for organizations of any size. We assist companies in identifying where digitalization and AI can be beneficial in their operations and where they might not be applicable. Our process begins long before any
Highlights
$10,000+
Min Project Size
2-9
Employees
Elsdorf, North Rhine Westphalia, De
Services Provided
34% AI Strategy & Roadmap Consulting
33% Data Annotation Services
33% Operational Process Consulting
AI Summary
“Shedara is a consulting firm specializing in practical digitalization and AI integration across sectors, providing tailored strategies and decision-support to enhance operational effectiveness for organizations of all sizes.”
AverickMedia
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Transforming Data into Revenue - AverickMedia offers sales leads with guaranteed precision. Our services include Data Enhancement, Data Cleansing, List Management, Mailing Lists, Sales Leads, Data Appending, B2B Sales Lead Generation, and Email Lists. AverickMedia is recognized as one of the top pro
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided
10% Other Digital Marketing
24% Email Marketing & Automation
33% Data Annotation Services
33% Market Research & Competitive Intelligence
AI Summary
“AverickMedia specializes in precise B2B sales lead generation, offering comprehensive data solutions including cleansing, enhancement, and targeted email databases across diverse industries worldwide.”
Get Your Prospect
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Established in 2020, Get Your Prospect merges cutting-edge technology with expert data analysis to offer exceptional B2B lead generation services. Our experienced team specializes in developing personalized prospect lists, enriching contacts, and ensuring precise data validation, resulting in reliab
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
24% BI & Big Data Consulting & SI
10% CRM Consulting and SI
33% Data Annotation Services
33% Outbound Lead Generation
AI Summary
“Get Your Prospect delivers data-driven B2B lead generation services using advanced technology and expert analysis to provide personalized, accurate prospect lists that enhance sales effectiveness.”
Engai Technologies
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Engai Technologies: Exceptional Data Annotation Since 2023, Engai Technologies has been supporting Data Scientists and ML Engineers in projects related to Computer Vision, NLP, and LLM. We take care of dataset labeling, allowing you to concentrate on creating outstanding models using our annotation
Highlights
$25,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Services Provided
10% Generative AI
24% AI Strategy & Roadmap Consulting
33% Data Annotation Services
33% Search Engine Optimization (SEO)
AI Summary
“Engai Technologies, founded in 2023, specializes in data annotation services for Computer Vision, NLP, and LLM, enabling efficient dataset labeling to support advanced machine learning development.”
Tazriel LLC
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Tazriel (tazriel.com) is a worldwide business process outsourcing (BPO) company focused on helping rapidly growing businesses scale efficiently and affordably. We offer 24/7 support through our network of highly skilled global professionals, providing a strategic edge for companies looking to enhanc
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
33% Data Annotation Services
24% IT Staff Augmentation
10% Other IT Consulting and SI
33% Digital Strategy
AI Summary
“Tazriel LLC is a global BPO firm offering 24/7 business operations, IT, and marketing/AI services, delivering scalable, cost-effective solutions and expert support for growing businesses.”
Ailfy
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Ailfy is a cutting-edge provider of artificial intelligence solutions focused on increasing business productivity and competitiveness. As a certified IBM Business Partner, we create personalized AI solutions to meet the distinct requirements of our clients. Our range of products features Chloe AI HR
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
24% Generative AI
10% AI Strategy & Roadmap Consulting
33% Data Annotation Services
33% Operational Process Consulting
AI Summary
“Ailfy delivers tailored AI solutions to enhance business productivity across HR, data management, and operations, leveraging expertise as an IBM Business Partner to drive efficiency and growth.”
Spark Analytics Ltd
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Located in Nairobi, Kenya, Spark Analytics is a leading data consultancy that offers a range of data and analytics services and solutions aimed at providing actionable insights. Our goal is to facilitate timely and informed business decisions that keep our clients ahead of their competitors. As a re
Highlights
2-9
Employees
Nairobi, Ke
Services Provided
50% BI & Big Data Consulting & SI
20% Content Moderation Services
30% Data Annotation Services
AI Summary
“Spark Analytics Ltd., based in Nairobi, Kenya, provides comprehensive data consultancy services transforming raw data into actionable business intelligence to support informed decision-making and competitive advantage.”
Pienomial
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Established in 2020, Pienomial equips life sciences companies with the tools to speed up innovation, reduce risk, and enhance drug development processes. Our goal is to improve global health by promoting smart, swift, and evidence-based decision-making throughout the entire therapeutic lifecycle.
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Rockville, Maryland, Us
Services Provided
20% Content Moderation Services
30% Data Annotation Services
50% Brand Identity Design
AI Summary
“Founded in 2020, Pienomial provides innovative tools for life sciences companies to accelerate drug development, reduce risk, and promote evidence-based decisions, advancing global health outcomes.”
BuildWithMO
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BuildWithMO is a digital services company established by Michael Olakunle, a Digital Specialist and AI Workflow Consultant located in Ondo, Nigeria. We assist businesses around the globe in creating more efficient digital systems through AI automation, Shopify store setups, GEO content strategies, a
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
Services Provided
33% AI Agent & Multi-Agent System Development
20% Search Engine Optimization (SEO)
14% Content Marketing Strategy
33% Data Annotation Services
AI Summary
“BuildWithMO, led by digital specialist Michael Olakunle in Nigeria, delivers AI-driven automation, Shopify development, and GEO content strategies to optimize global business digital operations and efficiency.”
The Data Island
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Established in 2020, The Data Island is leading the way in innovative developments in artificial intelligence (AI). The rapid advancements in this sector are set to usher in a future with widely integrated super-intelligent systems. As an early pioneer, The Data Island focuses on creating advanced d
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Singapore, Sg
Services Provided+2 Services
20% Custom AI Chatbot Development
5% IT Staff Augmentation
20% Generative AI
5% AI Strategy & Roadmap Consulting
AI Summary
“Founded in 2020, The Data Island pioneers advanced AI solutions and data-driven products that empower businesses and machine learning teams to develop and deploy intelligent systems efficiently.”

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