Polylog
Sign inSubscribe
← The Polylog AI Intelligence Brief

Morning Edition · Sunday, July 19, 2026Published at 1:30 AM EDT · New York

Anthropic and Rivals Propose a Shared Scale for Rating AI Jailbreak Severity

The draft Cyber Jailbreak Severity scale runs CJS-0 to CJS-4 across four axes, published as Anthropic restored Fable 5 and Mythos 5 after a 19-day export-control block.

Save
Anthropic and Rivals Propose a Shared Scale for Rating AI Jailbreak Severity

Anthropic published a first draft of a Cyber Jailbreak Severity scale developed with Amazon, Microsoft, Google, and other members of its Glasswing coalition. The framework rates a jailbreak from CJS-0 (informational) to CJS-4 (critical) on…

Continue the AI Intelligence Brief

Track frontier labs, chips, export controls, model releases, regulation, and AI infrastructure.

  • 5 AI intelligence signals a day
  • Frontier labs, compute, and chips
  • Model releases and AI infrastructure
  • Source-grounded analysis with confidence labels

The Global Intelligence Brief stays free.

Subscribe for $19/moAlready a member? Sign in

Part of a tracked trend

Oversight and Evaluation Lag Accelerating AI Capabilities

Over the next 3-6 months, evidence mounts that governance, evaluation, and agent-safety methods are failing to keep pace with capability growth, driving investment in interpretability, agent-manipulation benchmarks, and institutional-reform proposals.

More from this edition