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Appen

Appen provides high-quality datasets and human-AI collaboration services to power and improve artificial intelligence systems for global enterprises.

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Headquarters Australia
Headcount 201-500 employees
Updated Sep 2025
Last verified Sep 2025
Overview Capabilities Related Contact

What Appen Does

Appen provides high-quality datasets and human-AI collaboration services to power and improve artificial intelligence systems for global enterprises.

Editorial overview

Appen Limited is a global leader in providing high-quality datasets and human-in-the-loop services that power artificial intelligence (AI) and machine learning (ML) systems for some of the world’s largest technology companies. Founded in Sydney, Australia in 1996 by linguist Dr. Julie Vonwiller, Appen initially focused on speech and language data collection. The company expanded rapidly through strategic acquisitions, including the US-based Butler Hill Group (2011), Wikman Remer (2012), Mendip Media Group (2016), Leapforce (2017), Figure Eight (2019), and Quadrant (2021), broadening its capabilities in data annotation, search relevance, and mobile location data. Appen’s business model centers on providing enterprises with software and managed services to collect, curate, fine-tune, and monitor data for AI applications, leveraging a global crowd workforce of over one million flexible contributors across more than 180 languages and 130 countries. The company’s clients include eight of the world’s ten largest technology firms, reflecting its strong market position and reputation for quality and scale. Appen differentiates itself through its deep expertise, scalable platform, and commitment to data quality, supporting a wide range of AI use cases such as natural language processing, computer vision, automatic speech recognition, and content moderation. Recent developments include leadership changes, with Ryan Kolln appointed CEO in February 2024, and ongoing investments in platform innovation and compliance. Appen is publicly traded on the Australian Securities Exchange (ASX: APX) and maintains offices in Australia, the US, UK, Canada, China, Japan, South Korea, and the Philippines.[1][3][4]

Key differentiators
Global crowd workforce in over 180 languages
End-to-end data platform for AI lifecycle
Expertise in both human annotation and automation
Market position

Enterprise Leader

Capabilities

Company overview

Compliance & security
ISO27001 certified
GDPR claims
AI modalities & capabilities
Training Data Mlops Consulting Synthetic Data Evals Red Teaming
CV core
NLP core
ASR core
TABULAR supported
Languages & industries
Languages
EN ES FR ZH AR JA KO
Industries
Healthcare secondary
Automotive secondary
Ecommerce primary
Gaming secondary
Finance secondary
Gov secondary
API & integration
REST API Batch Processing
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