Argilla

Free tier

The 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 an open-source data annotation and dataset-building framework tailored for NLP and LLM workflows. It provides a Python SDK (with an intuitive API) and a web-based UI that integrates with popular ML libraries, supporting pipelines for RLHF, supervised fine-tuning (SFT), and model evaluation. Its companion library, Distilabel, enables AI-assisted data generation and labeling at scale. Argilla can be self-hosted or run via the cloud, and its tight integration with the Hugging Face ecosystem makes it straightforward to push curated datasets directly to the Hub.

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