From Lab to Real World - A Trusted AI Data Partner
With 30 years of experience, Appen provides expert-led agentic, LLM and GenAI data solutions and evaluation at global scale, across languages, modalities, domains, and across the full model lifecycle.
Why AI teams choose Appen
Expertise
With over 30 years of data and AI expertise, we deliver future-ready, trusted data and workflows to power up the world’s AI innovators and next-gen models.
Quality
We provide high-complexity, expert data tailored to your unique use cases and task requirements.
Scale
1M+ skilled, multilingual contributors worldwide enable us to prepare data at scale.
Innovation
As an industry-leading AI data solution provider, we continuously invest in research and technology to push the boundaries of what's possible for the future of AI.
Full-Stack AI Data Services
LLM & Generative AI Solutions
Expert-led data for modern AI systems
End-to-end LLM, GenAI, and agentic AI data solutions, powering 80% of the world’s leading foundation model builders.
- Deep domain expertise across 90+ domains
- Multilingual and multimodal data across 100+ languages
- Supervised fine-tuning and human preference ranking (RLHF / DPO)
- Red teaming and safety alignment
300+ LLM projects delivered in the last 12 months
Model Evaluation & Benchmarking
Improve real-world model performance
Appen designs custom evaluation frameworks aligned to real-world use cases, covering LLM, multilingual, and multimodal evals and benchmarking, including:
- A/B testing and comparative benchmarking
- Cultural accuracy and cross-lingual consistency
- Cross-modal reasoning quality & alignment
- Harm taxonomy design, safety scoring, and risk analysis
90,000 evaluations completed in 4 days across 6 domains
Language & Localization Services
Deep expertise in speech and language data
With 27+ years of specialization in language data, Appen supports speech and language models on a global scale.
- Transcription for ASR, virtual assistants, and in-car systems
- Translation, localization, and linguistic validation
- Text annotation (NER, intent, normalization, PII redaction)
- Prompt and response generation for text-based AI
Coverage across 500+ languages, dialects, and locales
Data Collection
Responsible data sourcing & collection at scale
Custom datasets and data collection services across text, image, audio, video, location, and devices - built for real-world AI.
- Large-volume conversational and multimodal data collection
- Call-based, multi-speaker recordings with diarization
- Production-ready datasets for LLM, ASR, and multimodal systems
- Location data across 10+ global markets
Million-scale of data units delivered across 500+ languages and 100+ domains
Data Annotation
Training-ready data for complex AI workflows
Comprehensive and precise multilingual and multimodal data labeling and annotation services, supporting traditional ML, LLMs, and GenAI systems.
- Text, image, audio, video, and multimodal data annotation
- Classification, categorization, sentiment, intent, relevance
- Speech transcription, timestamping, and speaker labeling
- Image and video labeling, OCR, and document processing
10B+ data units delivered across 15,000+ AI projects
30 Years of Expertise, Built for What’s Next
