Cyber models, open weights, and the AI platform wars

The period confirms what's been building for months: the frontier AI labs are fragmenting into specialized, gated ecosystems while Meta pushes harder into open weights as a counterweight. OpenAI's cybersecurity-focused models and expanded platform capabilities signal confidence in responsible deployment of high-risk applications. Meanwhile, the broader ecosystem is racing to build inference-efficient systems and deploy AI at scale. For builders, this means the choice between proprietary moats and open access is sharpening.