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Anthropic free for open source

What Anthropic gives open source projects, who qualifies, and how to apply. 1 verified offer, last checked 2026-09-07.
FOS-0005 ACTIVE verified 2026-09-07

Anthropic

Claude for Open Source (Claude Max 20x)
What you get
6 months of free Claude Max 20x subscription for eligible open source maintainers and core contributors; program accepts up to 10,000 contributors.
Applies to
an individual maintainer
Requirements
actively developedpublic repository
run a repo match above to see which you meet →
How to apply
Application form on the program page; reviewed on a rolling basis, approved applicants get an activation link for Claude Max.
Provenance
Confirmed against claude.com/contact-sales/claude-for-oss on 2026-09-07, matched anchor “Open Source Program”.

Verified 2026-09-07. Details changed? Fix it on GitHub. Not sure you qualify? Match your repo against all 176 offers, or browse AI and ML.