We provide high-quality training data with our leading technology platform, managed services, and our global crowd to power AI globally.

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Sydney – 26 August, 2021 – Appen Limited, the leading provider of high-quality training data for organizations that build effective AI systems at scale, today announced it has signed a definitive agreement to acquire Quadrant, a global leader in mobile location data, Point-of-Interest data, and corresponding compliance services.
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Computer Vision
Teach your models to interpret and understand like humans do. Our sensor, image and video annotation and collection services will help improve your computer vision models at scale.
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Search Relevance
Give your customers the results they’re looking for. Over 25 years’ experience improving search results through annotation, evaluation, validation, categorization, and more.
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NLP & Speech
Enhance your Natural Language Processing solutions to replicate and extend human communication and reasoning with our top-grade training data.
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Confidently deploy machine learning products with the Appen platform which combines human intelligence with cutting-edge models to create the highest-quality training data for your projects.
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Deploying World-Class AI

When your goal is to launch world-class AI, our reliable training data gives you the confidence to deploy. You choose the level of service and security you want for data collection and annotation, from white-glove managed service to flexible self-service.


Access human intelligence at scale combined with cutting-edge models to create reliable training data that meets your requirements. The platform enables people to provide the annotations, judgments, and labels you need.

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Crowd Management

Let the world improve your AI with our global crowd of over one million skilled contractors. They speak 235+ languages in 170+ countries and you can choose the level of qualification, security, and breadth that fit your objectives.

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Collaborate with our multilingual, globally-based experts to ensure data meets your specs. We use multiple quality control methods, mechanisms, and technology to meet and exceed your quality standards for training data.

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Transforming Leaders in Every Industry


Deliver innovative products and improve user experience with large volumes of reliable training data. Confidently deploy world-class AI trained on ethically sourced data that works for all users, regardless of age, gender, location, race, or language. 

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Accelerate machine learning with training data for autonomous vehicles and improve speech-recognition systems, in-car navigation, and user experience with more accurate field testing.

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Financial Services

Deploy AI projects with confidence to make smarter, faster, and less expensive decisions. Leverage AI to enhance customer experience, customer acquisition and retention, increase business efficiency, and achieve cost reduction goals.

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Capitalize on secure data services and build world-class AI that improves patient care while reducing healthcare costs. Preserve patient confidentiality while training AI that saves lives.

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Retail leaders leverage data for advanced applications of artificial intelligence to boost conversion rates, improve customer experience, deliver personalization, and more

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Upgrade emergency response, defense initiatives, and law enforcement with cutting-edge AI, powered by the most advanced AI-powered platform delivering secure, reliable training data services.

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Customers Running World-Class AI

Delivering Confidence for Your AI Projects


Our skilled project managers use multiple quality control methods and mechanisms to meet and exceed quality standards for training data.


With a crowd of over one million skilled contractors operating in 170+ countries and 235+ languages, we can collect and label high volumes of image, text, speech, audio, and video data used to build and improve artificial intelligence systems.


We provide multiple secure service offerings, including secure, remote contractors, on-site contractors, on-premise solutions, and ISO 27001 / ISO 9001 accredited secure facilities.


Our platform and solutions are purpose-built to handle large-scale data collection and annotation projects, on demand. With deep expertise planning and recruiting to meet a variety of uses cases for our clients, we can quickly ramp up new projects in new markets.

Global Partners

Our partners are leading technology and services companies that you can leverage to build end-to-end AI solutions

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Machine Learning Experts and a Global Workforce of One Million

With over 1,125 employees located in nine offices around the globe and access to a curated crowd of over one million flexible contractors worldwide, we can meet your most challenging demands.

We operate using our Crowd Code of Ethics, which promotes fair pay, inclusivity, and well-being for contractors worldwide.

Meet Our Global Crowd