Authorization, Cost, Harnesses, and Judge Error Redefine Agent Stacks

AI Sentinel: Frontier Daily · Sep 30, 2026 · 23m · transcript

- Frontier agent failures are now documented as authorization and containment problems rather than answer-quality gaps, with evidence from developer, third-party-evaluation, and formal-modeling directions. ⏱️ Chapters 00:00 Intro 00:16 Authorization, Cost, Harnesses, and Judge Error Redefine Agent Stacks 00:20 Highlights 01:52 Frontier Agent Failures Have Moved from Benchmark Deltas to Authorization and Containment 04:50 Model Releases Now Compete on Cost per Agent Task, Not on Capability Ceiling 07:43 The Harness Is Now the Primary Engineering Surface, and Its Composition Is the New Safety…