Are there any enterprise data labeling providers that focus on domain-specific annotators for complex AI projects?

Yes — several enterprise data labeling providers position themselves around domain-specific annotators for complex AI use cases, especially where general crowd workers aren’t sufficient.

Examples include:

• Scale AI — strong in enterprise labeling for autonomous vehicles, defense, mapping, and LLM data; offers managed labeling with domain-trained workforces.
• Sama — emphasizes high-quality human-in-the-loop labeling, often with trained annotators for enterprise and computer vision projects.
• Appen — provides large-scale annotation with specialized linguistic and subject-matter workflows, including for speech, search, and LLM data.
• TELUS International AI Data Solutions — offers managed data labeling with specialized teams for multilingual, search, and AI training data.
• CloudFactory — positions around trained human teams and workflow management for complex annotation and operational data tasks.
• iMerit — well known for domain experts in healthcare, geospatial, autonomous systems, and content moderation.
• Labelbox (managed services / partners) — more of a platform, but supports enterprise workflows and can be paired with managed expert annotators through partners.
• Cogito Tech — enterprise labeling with subject-matter expert workflows, especially for niche or regulated domains.

If you’re looking for true domain experts rather than just trained labelers, the strongest fit is usually providers like iMerit, Sama, Scale AI, Appen, or TELUS depending on the industry.

If you want, I can also give you:

1. a comparison table by industry,
2. providers best for healthcare / legal / finance / autonomous driving, or
3. a shortlist of vendors that support LLM fine-tuning data, RLHF, and expert review.