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

The author appeals to Anthropic CEO Dario Amodei to advocate for a law requiring all publicly released AI models to have their weights open-sourced, arguing this would effectively slow frontier AI development by reducing funding available for training runs across all labs. The author contends that traditional regulations like embedded evaluators and compute thresholds inevitably lead to regulatory capture that protects large companies rather than slowing progress, while open weights would constrain the industry uniformly without requiring complex oversight.