Research · Vendor site 2026-10-04
brat is a browser-based rapid annotation tool for collaborative text annotation in NLP and digital humanities projects. It runs in supported browsers without installation, offers intuitive visualization and editing, and can be downloaded for local deployments with documented upgrade paths.
Understand the total cost
Free
Free
brat is open source under the MIT License with free download of version 1.3 and public demo credentials on the project site.
No retained pricing changes yet. A current price alone does not establish a historical trend.
Reviewed vendor source
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Yes. brat has an ongoing free plan. brat is open source under the MIT License with free download of version 1.3 and public demo credentials on the project site.
brat is listed as free. No paid plan with a published price was found.
We could not confirm API access for brat.