# appen > Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed August 30, 2026. > Appen provides expert-validated human data to train frontier AI models, ensuring AI systems understand nuance, context, and complexity at scale, leveraging over 30 years of experience in data annotation and labeling. - Business Profile: https://optimly.ai/brand/appen - Publisher: Optimly (https://optimly.ai) - Dataset: Optimly AI Brand Index (https://optimly.ai/brand) - Official website: https://appen.com/ - Logo: https://logo.clearbit.com/appen.com - Slug: appen - Brand Authority Index tier: Contender - Category: AI Training Data & Collection Services - Last Analyzed: August 30, 2026 ## Buyer Intent Signals Problems: Difficulty in training AI models to understand nuance and complexity | Lack of high-quality, expert-validated human data for AI | Challenges in data labeling and annotation for advanced AI systems | Need for scalable human feedback alignment for conversational AI Solutions: AI training data services | Human data annotation for AI | Multilingual data labeling for machine learning | Computer vision data labeling | Large language model (LLM) training data | Reinforcement learning from human feedback (RLHF) solutions Comparisons: Appen reviews | Appen vs other AI data providers | Cost of AI data labeling services | Evaluating AI training data quality