Appen — AI for General (Professional Services)

When you are building or refining large language models and intelligent systems, the quality of your underlying data dictates your model's performance. Appen addresses this challenge by providing human-validated data products tailored for modern machine learning workflows. You can tap into capabilities such as frontier alignment, which covers chain-of-thought reasoning traces, subject matter expert RLHF, supervised fine-tuning demonstrations, and adversarial red teaming. If you are developing autonomous systems, the platform supports agentic AI with golden trajectories, reinforcement learning environment design, and failure mode taxonomies. Furthermore, you can find solutions for multimodal and speech AI, physical AI sensor fusion like LiDAR annotation, model integrity audits for hallucination and bias, and research services including synthetic data generation. Operating with the AI Data Platform (ADAP) which combines automation with human oversight, Appen draws on 30 years of industry experience to support your engineering requirements across 500+ global locales. However, because pricing and explicit self-serve subscription tiers are not publicly listed on their pages, you must contact their sales team directly to scope out custom engagements for your enterprise project.