Labelbox

Data platform providing reinforcement learning data, custom evaluations, and expert annotation for AI model development.

Verified API available Free tier ~1.7k monthly visits
Quick facts
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.

#ai data platform#ai development#data annotation#expert network#model evaluation#reinforcement learning#robotics-data

Key features

What makes it stand out
01
Reinforcement learning data with expert-crafted scoring rubrics for coding and science domains
02
Custom evaluation systems for private AGI benchmarking and head-to-head model comparisons
03
Full-stack robotics data including video, trajectories, and multimodal annotations
04
Access to 1M+ knowledge workers across 40+ countries through Alignerr expert network
05
Purpose-built data collection infrastructure for fastest time to market

Who is Labelbox for?

Who benefits most from this tool
training reinforcement learning models
creating custom AI evaluation benchmarks
developing robotics AI systems

Pricing

Free tier available — start without a credit card

Free Tier

Free
  • 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

Custom

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

Search presence Top 100k site
Domain Domain registered 2003

Gallery

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