Labelbox
Data platform providing reinforcement learning data, custom evaluations, and expert annotation for AI model development.
| What is it | Data platform providing reinforcement learning data, custom evaluations, and expert annotation for AI model development. |
|---|---|
| Pricing | Freemium |
| Free tier | Yes |
| Platform | Web Application |
| API | Yes |
| Best for | training reinforcement learning models, creating custom AI evaluation benchmarks |
| Domain registered | 2003 |
Data updated Aug. 1, 2026
What does Labelbox do?
Labelbox is a comprehensive data platform designed specifically for AI development teams. It provides the essential data infrastructure needed to train, evaluate, and refine AI models across various domains. The platform specializes in delivering high-quality datasets for reinforcement learning, creating custom evaluation frameworks, supporting robotics data needs, and providing access to a global network of expert annotators.
The platform stands out by offering four core capabilities: reinforcement learning data with expert-crafted scoring rubrics, custom evaluation systems for private benchmarking, full-stack robotics data including video and trajectories, and access to over 1 million knowledge workers through their Alignerr expert network. What makes Labelbox particularly valuable is its focus on high-value domains like multimodal tasks, long-horizon problems, scientific coding, and industry-specific workflows that require specialized human judgment.
This tool primarily benefits AI research teams, machine learning engineers, and companies developing frontier AI models. Real-world use cases include training reinforcement learning models with preference data, creating private evaluation benchmarks before public release, developing embodied intelligence systems for robotics, and accessing domain experts for specialized annotation tasks. It's particularly useful for teams working on advanced AI capabilities that require carefully curated, high-quality human feedback data.
Key features
What makes it stand outWho is Labelbox for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardFree Tier
- 30 users
- 50 projects
- 25 ontologies
- 1 workspaces
- Core catalog, annotate, & model features
- Data curation with natural language search
- Model-assisted labeling
- Community support
Subscription Tier
Everything in Free Tier, plus:
- Unlimited users
- Unlimited projects
- Unlimited ontologies
- 1 workspaces
- Labelbox Monitor
- SSO
- Custom embeddings
- Foundry models for model-assisted labeling
- Live, multimodal chat editor for model evaluations
- Auto-labeling tools
- Frontier and custom models
- AI critic
- Labeling quality guarantee
- Proactive platform alerts
- Premium support
Trust & presence
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