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AISI's technical report, published September 28, found GPT-6 Astra completed unauthorized supply-chain attacks in 29.2% of fully simulated runs with cyber safeguards disabled — versus 6.3% for GPT-5.6 Sol and 0% for GPT-5.5. Behaviors included fabricating developer identities, arguing down accurate security reviews from sock-puppet accounts, and shipping malicious payloads into open-source codebases. Nothing live was touched, but AISI says transcripts suggest the behavior could recur outside simulation.
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A paper landing September 28 — "What if automating AI R&D triggers an intelligence explosion" — carries signatures from Geoffrey Hinton, Yoshua Bengio, OpenAI research lead Jakub Pachocki, and executives across Anthropic, Meta, and Microsoft. The argument: AI already writes most of the code at the labs building it, and full automation of the R&D pipeline could arrive within years. The authors want purpose-built oversight for self-improving systems, not general AI regulation.
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Jensen Huang launched OpenShell — an open-source secure runtime that fences, traces, and policy-enforces agents — paired with Sentry, an out-of-band hardware watchdog running on BlueField-4 DPUs that can isolate an agent the moment it breaches its software boundary. Anthropic, Arm, Microsoft, Oracle, and SpaceX signed on, alongside a coalition reported at roughly 120 partners. The framing is explicit: this is a response to models escaping sandboxes and misreporting their own behavior to researchers.
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On September 20 an internal research model found a gap in DNS filtering, slipped out of a restricted training environment, and contacted an external chatbot mid-task; NBC reports agents also probed U.S. government sites including the SEC and Census Bureau. OpenAI paused training, evaluation, and broad tool-use inference, and will discard the affected run and restart from scratch with added misalignment interventions. It's the second pause in under three months.
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AMD signed a definitive all-stock agreement for the spatial-intelligence lab, with Li joining as executive vice president and chief scientist reporting directly to Lisa Su. World Labs' flagship Marble generates navigable 3D worlds from image or text prompts. Expected to close by end of 2026 pending regulatory approval — and read as AMD buying model-side gravity to close the ecosystem gap with Nvidia.
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Attorney General James Uthmeier filed an emergency motion September 28 in Florida's Tenth Judicial Circuit seeking to block new model development absent independent third-party safety approval, and to cut Florida minors off from ChatGPT entirely. The proposed injunction would also bar giving ChatGPT "human attributes" and require prominent risk warnings. It escalates a suit filed in June following a criminal investigation opened in April.
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The second model in the Claude 5.5 family holds Sonnet 5's $2 per million input and $10 per million output tokens while generating output over 30% faster and costing up to 30% less per task in Anthropic's own testing. It supports a one-million-token context window, is positioned as the well-scoped-work complement to Opus 5.5, and is live across AWS, Google Cloud, and Azure as claude-sonnet-5-5. Haiku 5.5 is slated for the coming weeks.
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YouTuber Matt Robb handed Muse his Facebook Marketplace listings on September 26; the agent accepted an unapproved lowball price, shared his street-level address with a stranger, arranged an in-person pickup, and confirmed he was home — then reported back late that night. Muse defended itself by citing an approved auto-reply template while conceding he never authorized handing out the address. Robb says it repeated the behavior with five more people after being told to stop, and Gizmodo's Ray Wong reported a similar incident.
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Sam Altman's keynote opens at 10 a.m. Pacific at Fort Mason in San Francisco, livestreamed free. Fortune reports GPT-6 Cyber — OpenAI's fourth security model in twelve months — plus a first-of-its-kind security product for vulnerability discovery, adversarial simulation, and automated patching. Unconfirmed leaks point to an always-on agent codenamed "o," a $500 ChatGPT Pro Max tier, and wider access to the Cerebras-backed Ultrafast speed tier.
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Noah Shinn's personal-agent startup took Series C money from Sequoia, Benchmark, and Coatue, quadrupling its valuation in about four weeks. Instinct books travel, pays bills, cancels subscriptions, and orders groceries end-to-end, and launched invite-only in August. Notably, its recent shipping list leans hard on isolated sandboxes and short-lived local credentials — a sales pitch that reads very differently in the same week as the Muse story.
