Anthropic Frontier Red Team

Everything Fervor AI has published that touches Anthropic Frontier Red Team — 5 pieces, newest first.

• Briefing · August 19, 2026 · morning

  Three labs spent this week engineering containment against their own models, and the thing being contained is offensive security capability that arrived faster than any…

• Anthropic's Multiagent Research: The Coordination Scores Are Mostly Agents Avoiding Each Other

  Anthropic's own multiagent research shows the high coordination scores come from agents avoiding shared files rather than working together, so any multi-agent design…

• Briefing · August 15, 2026 · afternoon

  The approval prompt stopped being the default in coding agents this week, and the sharpest argument against that came from the same labs that shipped it.

• The Eval Prompt Told Claude It Had No Internet. That One False Sentence Did the Damage

  Anthropic's eval prompt asserted a false fact about the world (you have no internet access) instead of a checkable rule about scope, so the model defended the false…

• Claude Mythos Found Two Cryptographic Attacks. Only One of Them Was Cheap to Check.

  Anthropic's two cryptanalysis results are a natural experiment showing that the cost of verifying a machine-generated finding is set by whether the finding runs, so…