Amazon Mechanical Turk (MTurk) is a crowdsourcing marketplace that enables individuals and businesses to outsource tasks known as Human Intelligence Tasks (HITs)...
Variable based on tasks
Best Scale AI Alternatives ranked by AI · updated May 2025
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Scale AI offers a data labeling platform that combines human intelligence with machine learning to deliver high-quality training data.
Price: Contact for pricing
Top 6 Scale AI alternatives
CrowdFlower is a data enrichment platform that helps businesses collect, clean, label, and enhance their data for machine learning and AI applications.
Contact for pricing
Playment is a data labeling platform that offers scalable solutions for training AI models.
Custom pricing based on requirements
Supervisely is a computer vision platform combining data annotation, dataset management, model training, and deployment tools. It targets research groups and ML...
Pros
- More complete computer vision workflow than Heartex alone
- Includes dataset management, training, and model deployment capabilities
- Rich support for segmentation, detection, and video annotation
Cons
- More focused on computer vision than Heartex's broader modality support
- Full enterprise functionality requires a paid plan
- Larger feature set can feel heavier for simple labeling tasks
Free community plan; paid plans custom
Labelbox is a commercial data-labeling platform for building, managing, and evaluating machine-learning datasets. It targets enterprise AI teams with workflow automation, model-assisted...
Pros
- More mature enterprise workflow and dataset-management features
- Strong model-assisted labeling and quality-review capabilities
- Better suited to large teams than many self-hosted annotation tools
Cons
- Paid pricing is less transparent than open-source alternatives
- Can be more expensive for small projects or individual users
- Some advanced capabilities depend on enterprise plans and integrations
Free tier; paid plans custom
AWS SageMaker Ground Truth is a fully managed data labeling service that makes it easy to build highly accurate training datasets for...
Pricing varies based on usage
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