Anthropic is opening up its Claude for Open Source program to a wider slice of the community. If you maintain a public repo, land PRs across the ecosystem, or keep a critical package alive, you can now apply for six months of Claude Max 20x -- Anthropic's top-tier individual plan -- at zero cost.
What you actually get
The Claude for Open Source program gives qualifying maintainers 6 months of Claude Max 20x -- Anthropic's highest-tier individual plan at $200/month -- completely free. Claude Max 20x is $200/month, so six months works out to $1,200 in value.
The "20x" label refers to usage headroom, not a different model. The "20x" refers to usage capacity relative to the Pro plan -- not a different model, not extra features, just dramatically more runway before Claude tells you to slow down. In practice, independent tests indicate this translates to roughly 900 messages per 5-hour window for Max 20x, compared to around 40-45 messages in 5 hours on the Pro plan.
A few things worth knowing before you apply:
- The OSS program gives you a Max 20x subscription -- not API credits. If you run Claude Code with an
ANTHROPIC_API_KEYenvironment variable set, billing routes to that key separately. - Max 20x is an individual plan. Teams requiring shared access need the Team plan. The OSS program grant applies to one individual account -- there's no "split the 20x across co-maintainers" option.
- There is no auto-renewal to Max 20x after the free period ends. When your six months are up, you drop back to whatever plan you were on before -- you won't be charged $200/month when it expires.
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