Anthropic has published system cards for its two newest flagship models, Claude Fable 5 and Claude Mythos 5, following its standard responsible-release practice. These documents cover dangerous capability evaluations, ASL safety-level determinations, red-teaming results, and alignment assessments under the company's Responsible Scaling Policy. They serve as primary references for safety researchers, enterprise buyers, regulators, and developers assessing model risk and deployment suitability.
Anthropic published a major update to its Responsible Scaling Policy, its governance framework for frontier AI risk. The revised policy keeps the commitment not to train or deploy models without adequate safeguards, while adding more nuanced capability thresholds and required safety levels. It focuses on risks such as autonomous AI R&D acceleration and CBRN weapons assistance, with stronger evaluations, documentation, governance, and external input.