Argilla
Free tierThe open-source collaboration tool for AI engineers and domain experts to build high-quality datasets
Free·All audiences·Powered by Hugging Face·API available·Open source
Key strengths
Open-source and self-hostable with full data controlIntuitive API for seamless integration into existing ML pipelinesSupports RLHF, fine-tuning, and active learning workflowsCombines AI automation with human-in-the-loop feedbackStrong community support and ecosystem via Hugging Face
Completely free
Madrid, Spain
Founded 2021
Self-hostable
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Argilla is well-suited for AI engineers who need to:
- Build high-quality NLP datasets with structured expert annotation at scale
- Implement active learning pipelines where model uncertainty drives which samples get reviewed next
- Run human-in-the-loop workflows to continuously improve model performance with real-world feedback
- Collaborate with domain experts without requiring them to interact with raw data files or code
- Integrate annotation into CI/CD-style ML pipelines via the available API, keeping dataset versioning and model iteration tightly coupled
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