Annotation

20 vendors.

• Appen — Publicly listed veteran of the data industry offering training data, annotation and model evaluation with a large global crowd.
• Centific — Provides multilingual datasets, secure data operations and responsible-AI services to model labs and enterprises.
• Claru — Training-data company focused entirely on physical AI, with a large library of egocentric video and annotations.
• CloudFactory — Managed workforce plus consulting for labeling, annotation and model monitoring.
• DataOcean AI — Data provider offering off-the-shelf datasets and custom collection and labeling, especially speech and multilingual.
• Defined.ai — Marketplace and services for multilingual, multimodal training datasets with compliance focus.
• Encord — Multimodal data management and annotation platform with an emphasis on physical-AI and sensor/video data.
• iMerit — Expert-led annotation and fine-tuning services backed by its own workflow tooling.
• Innodata — Listed data-engineering firm providing training data, annotation, evaluation and red-teaming.
• Labelbox — Started as labeling software; now sells expert data and training environments to frontier labs, plus an agent product for engineering teams.
• LXT — Collects, annotates and evaluates audio, speech, text, image and video data across a very wide range of language locales.
• OpenTrain AI — Marketplace for hiring vetted AI trainers and labelers for RLHF, evaluation and annotation.
• Perle AI — Routes work from a large international pool of credentialed professionals into AI training and evaluation projects.
• Sama — Annotation company covering computer vision and generative-AI data with human-in-the-loop quality control.
• Scale AI — Long-running supplier of labeled data, human feedback and model evaluations to frontier labs, government agencies and large enterprises.
• Sieve — Multimodal data lab supplying video, audio, image and interaction data to frontier AI.
• SuperAnnotate — Data infrastructure platform paired with managed expert workforces for annotation, evaluation and training-data projects.
• TaskUs — Outsourcing company whose AI services cover data labeling, RLHF and safety/red-teaming.
• TELUS Digital — Digital-services arm of TELUS offering AI data collection, annotation and evaluation at scale.
• TrustScale (formerly e2f) — Long-time language-data provider, now branded TrustScale, that also markets a hallucination-verification product.