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The policy debate over open-weight AI model distribution hinges on a specific technical property: once a lab publishes model weights publicly, that access cannot be revoked.
Anthropic CEO Dario Amodei addressed where the company stands on that question, stating Anthropic is not advocating for a ban on open-weight models, after critics questioned why Anthropic had not signed an industry letter last week in support of them.
The absence that triggered the question When an AI lab releases open-weight models, it publishes the numeric parameters encoding learned behavior to the public.
Any developer can download and run those weights without API controls or usage agreements.
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