healthcare Data Annotation Companies

Compare 23 company profiles. Verify current services, application requirements and availability directly.

Location matches come from imported role listings and do not establish current country eligibility.

• NextWealth

  NextWealth is an AI data operations and Human-in-the-Loop (HITL) company founded in Bengaluru, India, in 2009. With 5,000+ domain-trained specialists operating across Tier-2 delivery centers, NextWealth delivers enterprise-grade data annotation, computer vision labeling, NLP, and content moderation services to Fortune…

• Mercor

  Mercor is a remote talent platform that recruits professionals to help leading AI labs and enterprises train and evaluate frontier models. Its project marketplace covers software engineering, law, finance, medicine, research, languages, quality assurance and multimodal data work. Recent public listings ranged from abo…

• Micro1

  micro1 recruits subject-matter experts in engineering, medicine, finance, law, language and other fields for remote AI-training projects. Applicants can apply to a listed opportunity or certify skills for future matching. Its public FAQ says certification does not guarantee immediate placement, and its global recruiti…

• Ethos

  Ethos (AskEthos) is an AI expert network that matches experienced professionals, including lawyers, clinicians, finance analysts, engineers and researchers, with paid AI model training and evaluation work, expert calls and advisory projects. Instead of an application form, every expert is onboarded by an AI voice agen…

• AISpotters

  Artificial Intelligence, Machine Learning, Data Labeling, Data Collections, Image Annotation, Audio Annotation, Video Annotation

• Appen

  Data annotation services for AI and ML models, data collection, evaluation, image, audio, and video annotation

• Blomega

  Broad/Unclear specialization

• CloudFactory

  Data annotation services (2D/3D, computer vision, NLP), data curation

• Datacurve

  Curated code data for training LLMs, gamified coding data annotation platform

• Dataloop

  End-to-end cloud-based annotation platform, integrated labeling services, data annotation for images, video, audio, text, geo-spacial data, LiDAR

• DefinedCrowd

  Now Defined.ai (see above)

• Innodata

  Data annotation (text, images, audio, video, sensor data), AI solutions, workflow automation

• LXT

  Data annotation services (audio, image, speech, text, video), custom model fine-tuning, data collection

• Labeller

  Broad/Unclear specialization

• LinkedAI

  Annotation services (image, video), computer vision, data curation for fine-tuning large language models

• Samasource

  Data annotation solutions (image, video, 3D point cloud data), Generative AI, computer vision, data automation platform with Human-in-the-Loop (HITL)

• Scale

  Data annotation, collection, & curation for LLMs, generative AI, computer vision, image annotation, semantic segmentation, 3D point cloud annotation, LiDAR and RADAR annotation (especially for self-driving cars)

• Snorkel AI

  Broad/Unclear specialization

• Telus Digital

  Broad/Unclear specialization

• Turing

  Turing is a global remote-work and AI infrastructure platform that recruits software engineers, researchers and domain experts for application engineering and frontier-model training. Current referral opportunities include scientific coding, AI response evaluation, research, languages, creative work and medical review…

• Welocalize

  Data annotation (image, text, audio, video), transcription, summarization, AI data training, localization

• Welodata

  Broad/Unclear specialization

• iMerit

  Data annotation and model fine-tuning (image, video, LiDAR, text data), computer vision, geospatial technology