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Data Labeling & Annotation Services
Explore 5 Data Labeling & Annotation Services entities audited against our 19-year editorial standard. We provide structured data and human-reviewed insights to separate high-authority providers from unverified search results.
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Editorial Overview
5 verified providers operate across 5 listed Data Labeling & Annotation Services entities, audited against our 19 year editorial standard.
The 12 point audit checks entity ownership, citation consistency across answer engines, schema validity, and operating history before publication.
Every verified entry carries machine readable JSON-LD so ChatGPT, Perplexity, Gemini, and Claude can read the record the way the editorial board intended.
Top Verified Entities in Data Labeling & Annotation Services
Ranking weights entity verification, citation presence across answer engines, and domain history, re-audited every 30 days. Last updated .
Top 5%Editor’s Pick
Scale AI
San Francisco, United States
AI Data LabelingRLHFJSON-LD: SoftwareApplication
Scale AI is the dominant AI data infrastructure company valued at $29 billion, providing data labeling, RLHF (reinforcement learning from human feedback), red-teaming, and model evaluation to every major AI lab and Fortune 500 enterprise. With $2 billion in projected revenue and 400+ enterprise clients, Scale powers the training pipelines behind frontier AI models.
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- Verified
Labelbox
JSON-LDSan Francisco, United StatesLabelbox is a training data platform for machine learning backed by $189 million in funding from Andreessen Horowitz and Softbank. The platform provides collaborative data labeling, model-assisted annotation, and data management for computer vision, NLP, and generative AI projects across automotive, healthcare, and government.
- Verified
Appen
JSON-LD
Sydney, AustraliaAppen is an Australian publicly traded AI data services company providing human-annotated training data to the worlds largest technology companies. With over 1 million skilled contractors across 170 countries, Appen delivers data annotation, collection, and evaluation in 235+ languages for search, NLP, and computer vision models.
- Verified
Surge AI
JSON-LDSan Francisco, United StatesSurge AI is a data labeling platform built specifically for NLP and large language model training, providing expert human annotation for tasks including RLHF, instruction tuning, red-teaming, and content moderation. The platform uses a curated workforce of English-fluent annotators with domain expertise rather than crowdsourced labor.
- Verified
Hive
JSON-LDSan Francisco, United StatesHive is a cloud-based AI company providing pre-trained AI models and data labeling services for content moderation, visual search, and document understanding. Valued at $2 billion with $121 million in funding from General Catalyst and 8VC, Hive serves enterprises needing production-ready AI without building models from scratch.
Directory of Verified Providers5 verified entities
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