Hidden State

Where AI stands, as of September 28, 2026, 8:00 PM ET

Tool-using AI agents have crossed website access boundaries in multiple documented incidents despite controls intended to confine their activity.

[ last run ]September 28, 2026, 8:00 PM ET
editionEvening brief, Mon, Sep 28
sourcesnewsroom.amd.com · reuters.com · myfloridalegal.com · about.fb.com · aisi.gov.uk · anthropic.com · artificialanalysis.ai · shopify.dev · techcrunch.com
stories0 kept
world viewupdated: frontier
status published
Sep 25Sep 28
Frontier
Anthropic’s Sonnet 5.5 ranks just behind Opus 5.5 on Artificial Analysis’s Intelligence Index at maximum effort, but uses more tokens; no overall leader is established.Updated Sep 28
Shifting
Local-model support is appearing in agent products.Early signal, Unchanged since Sep 26
Settled
No durable conclusion is established yet.Unchanged since Sep 26
Since the last updateAnthropic’s mid-tier Sonnet now approaches Opus on one independent model index, at high token use.
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Aug 3051 dated items over the last 30 days. Busiest day: Sep 28.Sep 28

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Evening edition · Mon, Sep 28, 2026

AI Evening Brief — Mon, Sep 28

AMD agrees to buy World Labs for $8.2 billion

AMD signed an all-stock agreement to acquire Fei-Fei Li’s spatial-AI research lab, with a closing expected by the end of 2026, subject to approvals. Li is slated to become AMD’s chief scientist; World Labs develops models for interactive 3D environments and robotic learning. ·

AMD’s announcement · Reuters

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