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Annotation platform for image, video, text, documents, geospatial data and audio with AI pre-labeling and labeling services.
Appen AI features and pricing (October 2026)
Listed Sydney-based provider of AI training data, RLHF, speech and multimodal data, with the ADAP platform and a global contributor network.
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Pricing: Contact for pricing
No prices published; projects by quote, as of September 2026.
What is Appen?
Appen supplies training and evaluation data for AI models, from RLHF and red teaming to speech, multimodal and LiDAR annotation, for AI developers and large enterprises.
Appen groups its offer into frontier alignment (RLHF, reasoning traces, red teaming), agentic AI (agent trajectories, RL environments), multimodal and speech data, physical AI with LiDAR and robotics data, model integrity checks such as hallucination benchmarks, and research services including synthetic data. Work runs on its ADAP platform with contributors from the CrowdGen network across more than 500 locales. Appen is headquartered in Sydney, listed on the ASX and states 30 years of experience and ISO/IEC 27001 certification.
Appen AI features and use cases
- Provides human feedback for alignmentContributors rate and write model responses and produce reasoning traces for training. Model developers get alignment data in many languages from one supplier.
- Annotates speech in many localesSpeech data for recognition and synthesis is collected and labeled across more than 500 locales. Companies building voice products cover languages that are hard to source otherwise.
- Tests models for hallucinationsModel integrity services benchmark hallucinations and run compliance audits. Teams get an outside view of model weaknesses before release.
What sets Appen apart
- Contributor network covering more than 500 locales, suited to multilingual speech and text data.
- Publicly listed company in Australia, which means published financial reporting.
Where Appen is strongest
Australia Available internationally
Appen is headquartered in Sydney and listed on the Australian Securities Exchange.
Questions to ask before you buy Appen
Appen publishes no prices, so define volume, languages and quality targets for a quote. Clarify where data is stored and which contributors in which countries will see it. Request a data processing agreement and the security documentation before sharing personal data such as voice recordings.
Appen reviews
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Questions about Appen
Where is Appen based?
Appen is headquartered in Sydney, Australia, and listed on the ASX under the ticker APX. It also has an office in Kirkland, Washington.
What does Appen cost?
Appen publishes no prices. Data projects are priced by quote.
Which certifications does Appen hold?
Its website names ISO/IEC 27001.
Appen update historyno updates yet
No changes recorded for Appen yet.
Changes the vendor made and confirmed user reports, each checked against the vendor's own pages. We review every tool monthly.
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