The 10 Best Data Labeling Platforms for AI in 2027

Label Studio is the open-source labeling tool from HumanSignal, which says it is used by over 1,000,000 AI practitioners. Community Edition is open source. Starter Cloud is $99 a month plus $49 a month for each additional user and is fully hosted, with up to 12 users, multi-modal labeling, role-based access control and quality workflows. Enterprise is custom and adds SOC2 and HIPAA compliance, SSO with SAML or LDAP, auto-labeling and bulk labeling.

CVAT has a free plan, Solo at $33 a month or $23 a month billed yearly, and Team at $33 per user a month or $23 per user yearly. It handles images, videos, 3D point clouds and audio, exports to more than 20 formats including COCO and YOLO, and comes as hosted CVAT Online, self-hosted CVAT Enterprise or open-source CVAT Community. CVAT also sells labeling services with 300+ dedicated annotators across 12 time zones.

Encord does not publish a price; Starter and Team have a Get started button and Enterprise is contact sales. Its editor covers native video annotation, LiDAR, audio, text and sensor fusion in one workflow. Team adds data agents, performance analytics and model evaluation, and Enterprise adds SSO and VPC or on-prem deployments. UiPath grew its dataset 10x and cut its error rate 4x with it.

SuperAnnotate does not publish a price: Starter has a Get started button, Pro is request a demo and Enterprise is contact sales. All plans include a fully customizable multimodal editor with image, video, text and audio editors. Orchestrate compute is 1K hours on Starter, 2.5K on Pro and 10K on Enterprise. The pricing page shows a 4.9 rating on G2.

V7 Darwin is quoted individually, built from a platform fee, user licenses and volume-based data processing; there is no list price. It offers V7 Auto-Annotate and SAM2, auto-track for video and automatic search for similar objects, and supports images, medical imaging files, videos, volumetric series and documents. V7 lists GDPR, HIPAA, SOC 2 Type II and ISO 27001.

Kili Technology has a $0 Free Trial with 2-5 team seats, 100 assets for text, documents and images, and 5 assets for video and satellite imagery. Grow is a custom subscription with up to 20 team seats and up to 50,000 assets, an API and a Python SDK. Add-ons include dedicated labeling services from Kili's expert team, and Enterprise offers on-premise deployment.

Dataloop does not publish a price. It is a platform that puts data, models, pipelines, applications and human feedback together, and its human feedback features support RLHF and RLAIF workflows and plug human review into any point of a pipeline. Video and LiDAR are listed among its data types.

Amazon SageMaker Ground Truth is charged per reviewed dataset object, with tiers for fewer than 50,000, 50,000 to 1,000,000 and more than 1,000,000 objects a month. Amazon Mechanical Turk labor is charged per object per review instance, and with a vendor the cost per label is set by the vendor. AWS lists Ground Truth Plus and Ground Truth as the two Amazon SageMaker Data Labeling offerings, and Ground Truth is not in the SageMaker AI Free Tier table.

Scale AI does not publish a price; its pricing page asks you to book a 1:1 intro call. Its Data Engine covers collecting, curating and annotating data across text, image, video and 3D sensor fusion, and its Generative AI Data Engine covers RLHF, red teaming, data generation and evaluation. Scale says 90% of the world's leading generative AI model builders are powered by it. Reuters reported in June 2025 that Meta would take a 49% stake for $14.3 billion; Meta did not disclose financial terms.

Labelbox does not publish a price. Its homepage now describes building the environments frontier labs train AI on, and agents for engineering and research teams, and says over 90% of leading US AI labs post-train and evaluate on it. It announced a Series E of $100M+.