Hire a Data Annotation Company

84 listed data annotation companies for AI training projects. Compare specialties, pricing, and capabilities.

1. NextWealth · Bengaluru, India — global delivery · image, video, text, audio, translation, healthcare, finance
   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 enterpr…
2. Nexus Expert Research · Silver Spring, Montgomery County, Maryland, United States
   Nexus Expert Research is a market research firm based in Silver Spring, Maryland, founded in 2022. The company connects market research firms, private equity groups, strategy consulting companies, and startups with subj…
3. Revelo · software eng. (code / dev tasks)
   Revelo is a remote technology talent platform offering two distinct paths: full-time software roles with international companies and flexible AI-training projects for people who can review code and technical model outpu…
4. Mercor · translation, image, text, audio, legal, finance, maths, agriculture, stem, healthcare, software eng. (code / dev tasks), video
   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, res…
5. Micro1 · San Francisco, CA, United States · image, audio, translation, legal, finance, maths, text, video, software eng. (code / dev tasks), healthcare, stem
   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 matchin…
6. Ethos · Worldwide · text, legal, healthcare, finance, software eng. (code / dev tasks), stem
   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…
7. AISpotters · image, text, healthcare
   Artificial Intelligence, Machine Learning, Data Labeling, Data Collections, Image Annotation, Audio Annotation, Video Annotation
8. Acgence · stem
   AI Data Collection Services
9. Alectio · text
   Machine Learning-Driven Data Curation, DataPrepOps platform
10. Aligned AI · image
    Broad/Unclear specialization
11. Alignerr · translation, text
    Data labeling, model evaluation, aligning AI models
12. Anthromind · image, text
    High-quality dataset development for AI model performance, complex data requirements
13. Appen · translation, image, text, legal, healthcare, finance, agriculture, maths, stem
    Data annotation services for AI and ML models, data collection, evaluation, image, audio, and video annotation
14. Blomega · translation, image, text, software eng. (code / dev tasks), legal, healthcare, finance, agriculture, maths, stem
    Broad/Unclear specialization
15. Bright Data · image, text
    Broad/Unclear specialization
16. CVAT · image
    Image & Video Data Annotation Platform for Computer Vision applications
17. Centific
    GenAI, data annotation & labeling for AI/ML, multilingual medical annotation, AI data foundry
18. Centrox AI · text
    Broad/Unclear specialization
19. Clarifai · image, text
    Automated and AI-assisted data labeling, fully managed data annotation services, high-quality training datasets, various labeling methods, image annotation
20. Clickworker · translation, image, text
    Data annotation services (image, text, medical data), AI training data, LLM dataset services
21. CloudFactory · image, text, healthcare, finance, agriculture, stem
    Data annotation services (2D/3D, computer vision, NLP), data curation
22. Cogito Tech · image, text
    Broad/Unclear specialization
23. DataQueue · image
    Platform for creating and annotating high-quality training data for AI and ML models
24. DataSpeckle · image, text
    Custom Machine Learning, Computer Vision, Natural Language Processing solutions, Text, Image, Audio, Video Annotation
25. Datacurve · translation, image, text, legal, healthcare, finance
    Curated code data for training LLMs, gamified coding data annotation platform
26. Dataloop · image, text, healthcare
    End-to-end cloud-based annotation platform, integrated labeling services, data annotation for images, video, audio, text, geo-spacial data, LiDAR
27. Deepchecks · image, text, agriculture
    Automatic and AI-assisted annotations, LLM evaluation, annotated datasets for AI and ML
28. Defined AI
    Broad/Unclear specialization
29. DefinedCrowd · translation, image, text, healthcare
    Now Defined.ai (see above)
30. Encord · translation
    AI-assisted data annotation tool, multimodal support (images, videos, audio), RLHF, computer vision
31. Enterprise AI Company (Ent.AI) · text
    Broad/Unclear specialization
32. Figure Eight · translation, image, text
    Broad/Unclear specialization
33. HelloGov · image, agriculture
    Data labeling for federal government, AI/ML solutions, data modeling
34. Hive AI · image, text
    Broad/Unclear specialization
35. Human Signal · image, text, agriculture
    Broad/Unclear specialization
36. Humans in the Loop · image, text
    Broad/Unclear specialization
37. HyperKurve
    AI productivity, Machine Learning, Data Labeling, supply chain solutions
38. Innodata · software eng. (code / dev tasks), legal, healthcare, finance
    Data annotation (text, images, audio, video, sensor data), AI solutions, workflow automation
39. Invisible Tech · image
    Broad/Unclear specialization
40. Jericho Systems Corporation · image
    Broad/Unclear specialization
41. Joinstellar ai · image, text
    Broad/Unclear specialization
42. Keymakr · image, text
    Image and Video Annotation, Data collection and classification for training convolutional neural networks and deep learning AI, computer vision, autonomous vehicles
43. LXT · translation, image, text, legal, healthcare, finance
    Data annotation services (audio, image, speech, text, video), custom model fine-tuning, data collection
44. Label Your Data · image, text
    Broad/Unclear specialization
45. Labelbox · image, text
    Data labeling platform, medical data annotation, image, video, audio, text annotation
46. Labeller · image, text, healthcare, agriculture
    Broad/Unclear specialization
47. LinkedAI · image, healthcare
    Annotation services (image, video), computer vision, data curation for fine-tuning large language models
48. Lionbridge · translation, image, text
    AI data services, data annotation (text, images, audio), prompt engineering, multilingual training data
49. Lionbridge AI · translation
    Broad/Unclear specialization
50. Macgence · image, text
    AI training data services, data annotation, robotics, medical annotation
51. Mighty AI · image, text
    Broad/Unclear specialization
52. One forma · translation, image, text
    Broad/Unclear specialization
53. OpenTrain AI · text, maths, stem
    Broad/Unclear specialization
54. Peroptyx · text
    Data annotation and model evaluation for machine learning, location-based ML training data
55. Plainsight · image, text
    Computer vision, annotation & data curation, AI-powered data annotation
56. Playment · image, text, agriculture
    Data annotation services (image, video, text), AI strategy consulting, SaaS-based platform for computer vision models, automotive data annotation
57. Realeyes · text, legal
    Broad/Unclear specialization
58. Reality AI · stem
    Broad/Unclear specialization
59. RedBrick AI · image, text, agriculture
    Broad/Unclear specialization
60. Roboflow · image
    Data annotation for computer vision, AI-assisted annotation tools, image annotation (bounding boxes, polygons), supports various annotation formats
61. Samasource · image, text, healthcare, agriculture, stem
    Data annotation solutions (image, video, 3D point cloud data), Generative AI, computer vision, data automation platform with Human-in-the-Loop (HITL)
62. SandLogic · text
    ML-assisted data annotation platform (AuVi.io) for text, image, audio, LiDAR, and video data, full-stack Enterprise AI
63. Sapien · stem
    Data annotation for LLMs, documents, images, text, audio, video, LiDAR, fine-tuning LLM models with human feedback, autonomous driving, education technology
64. Scale · translation, image, text, software eng. (code / dev tasks), legal, healthcare, finance, agriculture, maths, stem
    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)
65. Segments.ai · text
    Broad/Unclear specialization
66. SensiML Corp · image, text
    Broad/Unclear specialization
67. Sepal AI · text
    Broad/Unclear specialization
68. Snorkel AI · image, text, healthcare, finance, maths, stem
    Broad/Unclear specialization
69. SuperAnnotate · image, text
    Data annotation platform for image, video, text, AI data workflows, annotation services marketplace
70. Supervisely · image, text
    Data annotation platform for images, videos, LiDAR, DICOM datasets, AI automation, 3D point cloud labeling, computer vision
71. Surge AI · image, text
    Broad/Unclear specialization
72. Telus Digital · translation, image, text, software eng. (code / dev tasks), legal, healthcare, finance, agriculture, maths, stem
    Broad/Unclear specialization
73. Toloka · image, text
    Broad/Unclear specialization
74. Trilldata · text
    No information found (website 404)
75. Turing · translation, image, text, software eng. (code / dev tasks), legal, healthcare, finance, agriculture, maths, stem
    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 incl…
76. Unitlab
    Automated data annotation platform for computer vision, AI-assisted auto-labeling tools, image labeling
77. V7 · image, text
    Broad/Unclear specialization
78. Volga Partners · text
    Broad/Unclear specialization
79. Watchful · image, text
    Broad/Unclear specialization
80. Welocalize · translation, image, text, software eng. (code / dev tasks), legal, healthcare, finance
    Data annotation (image, text, audio, video), transcription, summarization, AI data training, localization
81. Welodata · image, text, healthcare, finance
    Broad/Unclear specialization
82. dataannotation.tech · image, text
    Data annotation services for AI and ML projects, training AI chatbots
83. iMerit · image, text, healthcare, agriculture, stem
    Data annotation and model fine-tuning (image, video, LiDAR, text data), computer vision, geospatial technology
84. py labelme · image, text
    Broad/Unclear specialization