label-studio

Label Studio is an open-source, multi-type data labeling and annotation tool that supports various data modalities, including computer vision, NLP, audio, and more. It allows users to create custom interfaces for labeling and evaluating AI models, and supports human-in-the-loop workflows. The tool is highly customizable and can be used for a wide range of applications, from training data to production AI evaluation.

label-studio is best for best for data scientists and ai developers who need to label and evaluate large datasets. It sits in the Chatbots category and is a freemium option.

label-studio is listed as freemium. Check the official website for current, detailed pricing tiers.

label-studio scored 8.6 out of 10 in 2026, based on six weighted metrics: usefulness, quality, ease of use, value, reliability, and popularity.

Highly customizable and flexible. Supports multiple data modalities. Open-source and free to use.

Steep learning curve due to complex features. Requires technical expertise to install and configure. Limited support for non-technical users.

label-studio is a top-tier pick in the Chatbots space. With an overall score of 8.6/10, it stands out for teams and individuals who need best for data scientists and ai developers who need to label and evaluate large datasets.