OpenAI
OpenAI built an LLM-powered ad stack for ChatGPT to interpret conversational intent, separate ads from answers, and serve relevant ads at scale.
Learn how OpenAI built ChatGPT’s LLM-powered ad stack to understand conversational intent, keep ads separate from answers, and deliver relevant ads at scale.
The daily briefing
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TLDRocket
21 October 2026
The clearest throughline in AI today is agents moving from demos to the parts of life that have receipts, approvals, and liability. Walmart is rolling out an Agent Gateway that lets approved shopping agents browse Walmart inventory and complete purchases on a user’s behalf—while tracking spend per agent and enforcing separate controls for each transaction. Around the same shift in “agent governance by design,” Anthropic introduced Claude Duet, built on Claude Opus 5.5, as a research preview that runs through iOS/Android apps and the web, sending daily briefs and prompting users only when action is needed. Enterprise security is catching up too: Red Hat expanded its partnership with NVIDIA to add runtime and infrastructure enforcement for autonomous AI agents on NVIDIA’s Vera Rubin infrastructure, including BlueField-3 support and Sentry monitoring designed to quarantine a compromised agent in milliseconds.
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