AI Prepared Daily — March 11, 2026

▸ AI/LLM · OpenAI

OpenAI Acquires Promptfoo to Secure Enterprise AI Agents

OpenAI announced its acquisition of Promptfoo, an AI security startup used by over 25% of Fortune 500 companies. The platform will be integrated into OpenAI Frontier to help enterprises test for vulnerabilities like prompt injections, jailbreaks, and data leaks before deploying AI agents.

The bottom line: Marketing teams deploying AI agents can now access built-in security testing to catch risks before customer-facing AI goes live.

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▸ Emerging Tools · Nscale

Nscale Raises $2B for AI Data Centers at $14.6B Valuation

UK-based AI infrastructure hyperscaler Nscale closed a $2 billion Series C—the largest in European history—led by Aker ASA with participation from Nvidia, Dell, and Lenovo. The company added Sheryl Sandberg and Nick Clegg to its board and is eyeing a US IPO.

The bottom line: As AI compute demand surges, marketers relying on cloud AI services should watch infrastructure players shaping availability and pricing.

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In Other News

Karpathy's AutoResearch Runs 100 AI Experiments While You Sleep — Data teams can adopt this autonomous experimentation loop for model tuning and testing, dramatically accelerating optimization cycles.GitHub →
JetStream Raises $34M to Govern Enterprise AI Deployments — Marketing teams deploying multiple AI tools can use governance platforms to track costs, ensure compliance, and prevent shadow AI sprawl.SecurityWeek →
Google Trains LLMs to Update Beliefs with Bayesian Teaching — Conversational AI for marketing could become more context-aware, improving personalization as customers provide signals across touchpoints.Radical Data Science →