What is Label Studio?
Label Studio is an open-source data labeling tool for text, images, audio, video and time series, used to prepare training data and evaluate LLM outputs. It supports custom labeling interfaces and ML-assisted pre-labeling, with a commercial enterprise edition from HumanSignal.
Key facts
- Pricing
- Free / Custom Pricing
- Free plan
- Yes
- Category
- Data Science
- Website
- https://labelstud.io/
- Last updated
- Oct 31, 2026
Label Studio FAQ
What is Label Studio?
Label Studio is an open-source data labeling tool for text, images, audio, video and time series, used to prepare training data and evaluate LLM outputs. It supports custom labeling interfaces and ML-assisted pre-labeling, with a commercial enterprise edition from HumanSignal.
Is Label Studio free?
Yes. Label Studio lists a free plan. Pricing: Free / Custom Pricing.
What category is Label Studio in?
Label Studio is listed in the Data Science category.
What is the Label Studio website?
The Label Studio website is https://labelstud.io/.
What are alternatives to Label Studio?
Data Science alternatives to Label Studio include Arthur, Fiddler, Chroma, Appen, Snorkel AI and Continual.
Alternatives to Label Studio
Guides that cover Data Science
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