An open letter to Dario: if you mean it, open the weights

The letter urges Dario Amodei to champion legislation that obliges any AI model released to the public to be published with open weights, arguing that this would cut funding incentives and slow frontier-model development more effectively than current regulatory proposals. It critiques existing approaches—embedded evaluators, compute caps, and antitrust waivers—as prone to capture and argues that open-weight requirements cannot be circumvented, even by Anthropic.