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Label Studio

verifiedFreemiumAPIlabelstud.io

Open-source data-labeling and AI-evaluation platform for image, text, audio, video and LLM workflows, with a paid enterprise tier.

What it does

Label Studio is an open-source platform for data labeling and AI evaluation. It supports many data types (image, text, audio, video, time series, multimodal) and human-in-the-loop workflows including RLHF, LLM evaluation and RAG grading. A paid Enterprise edition from HumanSignal adds automation, security, QA and analytics.

How to use: Label Studio can be installed via PIP, Brew, Git, or Docker. After installation, you can launch the tool, import data, create projects, and start labeling using customizable tags and templates.

Core features

Open-source multi-type labeling
Programmable, customizable interfaces
API, SDK and webhooks
ML backend for pre-labeling and active learning
LLM evaluation and RLHF workflows
Enterprise QA, SSO and analytics

Best for

→Labeling training data across modalities
→Human-in-the-loop AI evaluation
→RLHF and fine-tuning data collection
→RAG and LLM benchmarking

Pricing

Starter
$99/user
Toolspool rankingby monthly traffic

Reviews

Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.

Label Studio: The Easiest Way To Annotate Your Datasets
NeuralNine · 91K views
Installing Label Studio Plus Overview of Basic Features
Label Studio · 75K views