Label Studio review
Made by HumanSignal, Label Studio gives you an open-source labeling tool: self-host free, pay for cloud, or choose the Enterprise edition.
- Open-source status
- Yes, it carries the Apache-2.0 license
- Hosting choices
- Cloud or self-host
- Price
- No cost; Starter Cloud is $99 monthly
- A free option
- Community Edition, open source
- Supported file types
- Rating AI chatbot answers, plus Photos, Video, Text, Audio, Medical scans
- The audits and laws it references
- SOC 2, HIPAA
- Workforce for labeling
- Domain experts provide data services
References: label studio on github.com · humansignal.com pricing · labelstud.io homepage
Two things to know about Label Studio
- GitHub shows about 28.5 thousand stars for the project.
- Through AWS Marketplace, you can buy Enterprise with committed AWS spend applied.
What Label Studio offers as an annotation tool
- Covers images, audio, text, HTML, time series and video; Community lacks 3D image/LiDAR support.
- Enterprise includes native DICOM
- Eval for chatbots and agents: RAG QA, agentic traces, rating chatbot answers (RLHF)
- While labeling, AI assistance covers mL backend pre-labeling in all editions and SAM 2 video tracking; Enterprise adds chatbot-as-a-judge and auto-labeling.
Label Studio and similar platforms
| Platform | Open-source status | Hosting choices | Price |
|---|---|---|---|
| Label StudioThis page | Yes, it carries the Apache-2.0 license | Cloud or self-host | No cost; Starter Cloud is $99 monthly |
 Labelbox | No | Cloud | Not published |
 Encord | No | Cloud, VPC or on-premises (Enterprise) | Plans on request: Starter, Team and Enterprise |
 V7 Darwin | No | Cloud or your private cloud | Paid plans on request; free tier |
 SuperAnnotate | No | Cloud | Plans on request: Starter, Pro and Enterprise |
Every option shown side by side · open-source tool comparison
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Labeling services for the files Label Studio handles
What to ask Label Studio before you sign
- Which data types and labeling tools come with the plan we would buy?
- Can we export every label in our own format if we leave?
- Does the plan include model-assisted labeling, or is that an extra cost?
- Can you supply a labeling team too, or do we bring our own?
Would you rather have people do the labeling for you? Describe the job once and three annotation companies reply.
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