Data annotation vendors
Annotation services label, review or enrich data for model development. Compare contributor expertise, customer-data handling and stated security practices.
Data annotation vendors
42 vendors. 15 state they have a SOC 2 Type I or Type II report and 14 state they can run in a customer's cloud or on-prem. These are sourced statements, not independent verification. Pending and unspecified SOC 2 claims are excluded.
— means not publicly listed or not confirmed; it never means zero or “No”. Checked is the date a company’s facts were last checked, and each fact on its profile links to its source.
| Compare | Vendor | Offerings | Domains | Data sources | Funding | Checked |
|---|---|---|---|---|---|---|
| AppenAppen supplies AI labs and product teams with human-produced training data, annotation, expert feedback, RL environments, and model evaluations for machine-learning and agentic AI systems. | RL envs, Human data, Evals, Training data, Annotation | Multi-domain, Medical, Legal, Science, Finance, Coding, Browser, Security, Enterprise workflows | Expert-made, Licensed data | — | 2026-10-08 | |
| AsimovAsimov collects first-person video and sensor data of people doing everyday tasks in real homes and workplaces, and delivers it as annotated datasets to robotics teams training humanoid robots. | Human data, Training data, Annotation | Robotics and physical | Expert-made | — | 2026-10-13 | |
| Besimple AIBesimple AI supplies AI labs and voice-AI developers with licensed conversational audio, expert annotation, and benchmarks for training and evaluating speech models. | Human data, Training data, Evals, Annotation | Multi-domain | Expert-made | $3.5M | 2026-09-29 | |
| CentificCentific sells multimodal AI training data, human annotation, model evaluations, and simulated enterprise RL environments to frontier AI labs and enterprise AI teams. | RL envs, Training data, Evals, Human data, Annotation | Multi-domain, Finance, Medical, Enterprise workflows, Legal, Robotics and physical | Licensed data | $60M | 2026-09-29 | |
| ClaruClaru provides custom and licensed video, robotics demonstrations, and human annotations to AI labs building robotics, embodied AI, and world models. | Training data, Human data, Annotation, Evals | Robotics and physical, Games, Creative, Multi-domain, Coding, Legal, Medical, Math, Science, Security, Other | Licensed data, Expert-made, Synthetic, Open data | $170M | 2026-10-13 | |
| CloudFactoryCloudFactory supplies a managed human workforce and AI platform to businesses and AI developers, collecting and annotating data, preparing model-training and fine-tuning datasets, and providing human feedback, evaluation, and operational support for AI systems. | Human data, Training data, Annotation | Multi-domain, Medical | Expert-made | $78M | 2026-09-29 | |
| DataloopAcquired by Dell TechnologiesDataloop sells an AI data-development platform and on-demand annotation services to enterprises and AI teams, helping them organize, label, quality-check, and route multimodal data into AI training and production workflows. | Annotation, Human data, Training data | Multi-domain | Licensed data | $50M | 2026-09-29 | |
| DataOcean AIDataOcean AI sells off-the-shelf datasets and custom data collection, labeling, and model evaluation services to AI developers and enterprises, supporting LLM, speech, vision, multimodal, and autonomous-driving systems. | Training data, Annotation, Evals, Human data | Multi-domain, Coding, Finance, Medical, Legal | Customer data, Expert-made | — | 2026-09-29 | |
| Defined.aiDefined.ai sells licensed, multilingual AI training datasets and provides custom data collection, annotation, evaluation and model fine-tuning services to organizations developing AI. | Training data, Human data, Annotation, Evals | Multi-domain | Licensed data, Expert-made | $85M | 2026-09-29 | |
| e2fe2f, which renamed itself TrustScale in June 2026, sells custom AI training datasets, expert annotation, model evaluation and benchmarking, and reinforcement learning feedback through its ArgusRL platform, covering 200 languages and text, image, audio and video data. | Training data, Evals, RL infra, Human data, Annotation | Multi-domain | Expert-made | $50M | 2026-10-13 | |
| EncordEncord sells a multimodal data platform and managed collection, annotation, and evaluation services to AI teams preparing and improving training data for physical AI, computer vision, and generative models. | Training data, Annotation, Evals | Multi-domain, Robotics and physical | — | $110M | 2026-09-29 | |
| Humyn LabsHumyn Labs collects and annotates real-world multimodal human data—especially first-person video, sensor and motion signals, and speech—and supplies training datasets and evaluation benchmarks to AI labs, robotics developers, and other AI teams. | Training data, Annotation, Evals | Multi-domain, Robotics and physical | Expert-made | — | 2026-09-29 | |
| Huzzle LabsHuzzle Labs sells reinforcement-learning environments, expert-produced training data, evaluations, and custom-trained models to AI labs and enterprises seeking agents that can handle real software and business workflows. | RL envs, Human data, Evals, Training data, Annotation | Coding, Computer use, Enterprise workflows | Customer data | $6M | 2026-10-08 | |
| iMeritAcquired by EXLiMerit sells expert-led data annotation, training-data creation, human feedback, model fine-tuning and evaluation services, alongside Ango Hub workflow software, to frontier AI labs, AI developers and enterprises building multimodal and domain-specific models. | Human data, Training data, Evals, Annotation | Multi-domain, Medical | Synthetic | $24.5M | 2026-09-29 | |
| InnodataInnodata provides AI developers and enterprises with training data, human feedback, annotation, reinforcement-learning environments, model evaluations, and red-teaming services for building and improving AI models and agents. | RL envs, Human data, Training data, Evals, Annotation | Coding, Computer use, Browser, Enterprise workflows, Finance, Legal, Medical, Science, Math, Security, Robotics and physical, Multi-domain | Customer data, Expert-made, Synthetic | — | 2026-10-13 | |
| Invisible TechnologiesInvisible sells expert-created training data, model fine-tuning, evaluations, and custom reinforcement-learning environments to AI labs and developers; it also provides AI software and implementation support for enterprises. | RL envs, Training data, Evals, Human data, Annotation | Multi-domain, Coding, Finance, Legal, Enterprise workflows | Expert-made | $144M | 2026-09-29 | |
| KledA marketplace that curates and licenses human-contributed and rights-holder datasets—including video, images, audio, and text—for AI labs, research institutions, and enterprises training models. | Human data, Training data, Annotation | Multi-domain, Medical | Licensed data, Expert-made | $14M | 2026-09-29 | |
| LabelboxLabelbox sells simulated reinforcement-learning environments, expert-generated preference and training data, and evaluation services to frontier AI labs; it also offers enterprise teams software for running agents on real company workflows. | RL envs, Human data, Evals, Training data, Annotation, RL infra | Multi-domain, Coding, Computer use, Security, Enterprise workflows, Science, Robotics and physical, Finance, Legal | Licensed data | $189M | 2026-09-29 | |
| LightWrkLightWrk sells expert-produced reasoning annotations, preference and training signals, and evaluation workflows to robotics, physical-AI, and world-model teams. | Human data, Training data, Evals, Annotation | Robotics and physical | Synthetic | — | 2026-09-29 | |
| LXTLXT supplies AI developers and enterprises with custom and off-the-shelf training data, human annotation, evaluation, and RLHF services across text, speech, images, and video. | Training data, Annotation, Evals, Human data | Multi-domain, Legal, Finance, Medical, Robotics and physical | Expert-made | — | 2026-09-29 | |
| Macrodata LabsMacrodata processes robot and first-person video for robotics and embodied-AI teams, returning timestamped action labels, 3D hand tracks, task-progress signals, and quality checks that help prepare data for model training. | Annotation | Robotics and physical | Customer data | $4M | 2026-10-09 | |
| Miso MotionMiso Motion runs custom video collection for physical AI and robotics teams, recording consented professionals on paid jobs with one to six synchronized cameras and delivering redacted footage with per-clip records and optional task labels. | Human data, Training data, Annotation | Robotics and physical | Expert-made | — | 2026-10-13 | |
| OpenTrain AIOpenTrain connects AI labs and developers with vetted human experts for RLHF, model evaluation, red teaming, and data annotation. Customers hire directly or use a managed team working in their existing tools. | Human data, Training data, Evals, Annotation | Multi-domain | Customer data, Expert-made | — | 2026-10-06 | |
| Perle AIPerle supplies AI labs and developers with specialist-generated multimodal training data, annotation, RLHF and model evaluations through expert-led programs and managed workflows. | Human data, Training data, Evals, Annotation | Multi-domain, Medical, Legal, Robotics and physical | Expert-made | $17.5M | 2026-09-29 | |
| Poindexter LabsPoindexter Labs supplies expert data annotation and evaluation services to frontier AI teams, alongside syncronus, a collaborative platform for expert-led model training. | Human data, Evals, Annotation | Finance, Legal, Multi-domain | Expert-made | — | 2026-10-06 | |
| ProlificProlific gives AI labs and developers access to verified participants and subject-matter experts to collect human feedback, training data, and model evaluations through a platform, API, or managed research service. | Human data, Training data, Evals, Annotation | Multi-domain, Legal, Medical, Finance, Robotics and physical | Expert-made | $33.4M | 2026-09-29 | |
| ReasonCoreReasonCore provides expert-curated AI training datasets, reinforcement-learning environments, and adaptive evaluations for frontier AI labs, emerging AI labs, and enterprises developing or deploying advanced models. | RL envs, Training data, Evals, Human data, Annotation | Robotics and physical, Science, Coding, Finance, Math, Enterprise workflows | Customer data, Expert-made | — | 2026-09-29 | |
| Rise Data LabsRise Data Labs sells human- and synthetic-data production, annotation, and model-evaluation services to AI labs and enterprise model teams building and improving generative AI. | Human data, Training data, Evals, Annotation, RL envs | Multi-domain | Customer data | — | 2026-09-29 | |
| SamaSama sells human-in-the-loop data annotation, validation, evaluation, and training-data services to enterprise AI teams building computer-vision, multimodal, and generative AI models. | Training data, Evals, Annotation, Human data | Multi-domain, Robotics and physical, Creative | Customer data, Expert-made | $84.8M | 2026-09-29 | |
| SapienSapien supplies human-created and expert-reviewed training data to AI developers, including data annotation, collection, curated datasets, and quality checks for AI outputs. | Human data, Training data, Evals, Annotation | Multi-domain, Robotics and physical | Expert-made | $15.5M | 2026-09-29 | |
| ScaleScale sells AI labs and businesses custom training data, human feedback, annotation, RL environments, and model evaluations, alongside software to build, test, and deploy AI agents and applications. | RL envs, Training data, Evals, Human data, Annotation | Multi-domain, Coding, Computer use, Browser, Enterprise workflows, Finance | Synthetic, App replicas | $15.9B | 2026-09-29 | |
| SuperAnnotateSuperAnnotate sells AI data software and managed expert services to AI labs and developers, covering multimodal annotation, training data, model and agent evaluations, and reinforcement-learning environments. | RL envs, Human data, Evals, Annotation, Training data | Multi-domain, Medical, Legal, Science, Coding, Browser, Computer use, Robotics and physical, Math, Enterprise workflows, Finance | Expert-made | $67.5M | 2026-09-29 | |
| SurgeSurge sells AI labs and developers expert-built training data, human feedback, evaluation benchmarks, and interactive reinforcement-learning environments to train and assess AI models and agents. | RL envs, Training data, Evals, Human data, Annotation | Multi-domain, Coding, Enterprise workflows, Finance, Medical, Science, Math, Legal | Expert-made | — | 2026-09-29 | |
| TaskUsTaskUs provides outsourced AI data operations for AI developers and enterprises, including data collection and labeling, expert feedback and RLHF, model evaluations and red-teaming, and robotics data services. | Training data, Human data, Evals, Annotation | Robotics and physical, Medical, Enterprise workflows, Multi-domain | Expert-made | $279M | 2026-10-13 | |
| TELUS DigitalAcquired by TELUSTELUS Digital supplies AI labs and developers with expert-built training data, annotations, agentic RL environments, red-team testing and evaluations, plus custom multimodal and physical-AI datasets and managed data-collection services. | RL envs, Human data, Training data, Evals, Annotation | Coding, Enterprise workflows, Finance, Legal, Medical, Math, Robotics and physical, Science, Security, Other, Multi-domain | Expert-made, Customer data | — | 2026-10-13 | |
| TolokaToloka supplies AI labs and developers with human-expert and synthetic training data, agent environments, evaluations, and red-teaming to build and assess AI models and agents. | RL envs, Human data, Evals, Training data, Annotation | Multi-domain, Coding, Computer use, Enterprise workflows, Math, Science, Robotics and physical | Synthetic | $72M | 2026-09-29 | |
| Troveo AITroveo licenses and packages rights-cleared real-world data—including video, audio, text, business workflows, gaming and robotics—for AI labs and model developers, with custom sourcing and annotation. | Training data, Annotation | Multi-domain | Licensed data | $4.5M | 2026-09-29 | |
| Uber AI SolutionsUber AI Solutions provides custom AI data collection and annotation, specialist human feedback and RLHF, red-teaming, and model evaluation for frontier labs, enterprises, robotics firms, and autonomous-vehicle developers. | Annotation, Training data, Evals, Human data, RL envs | Coding, Enterprise workflows, Finance, Legal, Medical, Science, Robotics and physical, Multi-domain, Other | Expert-made, Customer data | — | 2026-10-09 | |
| Verita AIVerita supplies vetted domain experts and manages project operations for AI labs, producing annotation, human-feedback and evaluation work, training data, and support for reinforcement-learning environments. | RL envs, Training data, Annotation, Human data, Evals | Multi-domain | Licensed data | — | 2026-09-29 | |
| Vetto AIVetto sells AI labs and developers expert post-training data, human evaluation, custom RL environments, and verifier-graded benchmarks to help train and assess models on practical tasks. | RL envs, Training data, Evals, Human data, Annotation | Multi-domain, Science, Medical, Legal, Finance, Coding, Computer use | Expert-made | $3.6M | 2026-09-29 | |
| VisionLab AIVision Lab sells real-world factory video and SOP-linked annotations to AI and robotics teams, giving them structured examples of human tasks and industrial processes for training physical-AI models. | Human data, Training data, Annotation | Robotics and physical | — | $6M | 2026-09-29 | |
| XDOFXDOF collects robot teleoperation data and runs real-world policy evaluations for robotics labs and AI companies, and also supplies robotic systems and data tooling. | Training data, Human data, Evals, Annotation | Robotics and physical | Expert-made | $70M | 2026-10-13 |
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— not publicly listed or not confirmed. Open a profile for each fact’s source. The register is unranked; sorting only reorders.
How to read domain and SOC 2 labels
Multi-domain means work across several task areas, not every area. Vendors appear in a specific domain filter only when that area has supporting evidence. SOC 2 entries are vendor statements, not independently verified audits: Unspecified means claimed without a stated type; Pending means in progress; Not publicly listed means we found no public statement. None of those means a completed Type I/II report. SOC 2 and deployment details remain on profiles and in comparison.