Labelbox
Free tierThe data factory for AI teams — powering the world's most ambitious AI labs
Free tier available·All audiences·API available
Key strengths
Trusted by 90%+ of leading US AI labs for post-training dataAlignerr network of 2.6M+ expert knowledge workers across 40+ countriesFull-stack robotics data including video, trajectories, and multimodal annotationsCustom private AGI benchmarks and frontier model evaluationsApplied research team publishing at top venues like NeurIPS and CVPR
Free tier + paid plans
San Francisco, USA
Founded 2018
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- RLHF & post-training data generation: Produce human preference pairs and reward signal datasets using domain-expert annotators and structured rubrics for fine-tuning LLMs and multimodal models.
- Private frontier model benchmarking: Build custom AGI-level evaluation suites and run head-to-head arena comparisons to measure model capabilities before public release.
- Robotics trajectory annotation: Collect and annotate video, sensor data, and action trajectories using purpose-built hardware and an AI-powered data diversity engine.
- Multimodal rubric-based scoring: Apply structured scoring criteria across text, vision, and reasoning tasks to evaluate model outputs with expert-level precision.
- Domain-specific fine-tuning datasets: Curate high-quality data in specialized fields (scientific coding, finance, medicine) using credentialed professionals including PhDs and licensed practitioners.
- Safety dataset evaluation: Assess AI safety datasets and model alignment through rigorous red-teaming and intent-laundering research methodologies.