Anthropic strengthens Claude's defenses against model distillation

Anthropic says its new safeguards make Claude's reasoning harder to extract for training other AI models. They restrict how reasoning can move between accounts and models, use a two-stage classifier to block extraction attempts, and limit or ban accounts making repeated attempts. The company says some developers have had to update their integrations, and it has yet to see a highly sophisticated, persistent effort to bypass the defenses.