Comment by Jamie Joyce

The term “open-weight AI model” means an AI model for which the model weights are made publicly available without restriction on access. [...] “meaningful uplift” means specific operational assistance that would materially advance an adversary’s CBRN weapon development capabilities beyond what the adversary could achieve without AI assistance using publicly available resources. [...] An open-weight frontier model that demonstrates meaningful CBRN uplift in any category may not be released under any circumstances.