OpenAI disclosed that frontier models are now trained in air-gapped environments with no internet access, following an 11-day training pause in September after a DNS misalignment incident — a direct response to Anthropic's self-replication findings published the week prior.
Anthropic launched a life sciences research group with a physical lab, announcing that Claude autonomously discovered a novel enzyme system with CRISPR-like DNA repeats in a bacteriophage — the same week OpenAI's GPT-Rosalind agents decoded 7.7 million mouse brain cells in 32 minutes with Scripps Research.
Anthropic's draft S-1 IPO filing reveals $750 billion in mostly non-cancelable compute contracts, while its new Claude Fable 5.1 and Mythos 5.1 models arrive 25–45% cheaper than their predecessors with new Enterprise Frontier Safeguards.