OpenAI’s Supply-Chain Security Scare, Anthropic’s Mega-Round, and AI Attack Coverage Gaps | UpNext AI – May 15, 2026

OpenAI says hackers accessed some internal data following a code security incident tied to the open-source software supply chain. The company told TechCrunch the breach was limited to employee devices and a small subset of internal repositories, with no impact on production systems, user data, or model intellectual property. The incident is another reminder that frontier AI labs remain deeply dependent on conventional software infrastructure and operational security.  Meanwhile, the Financial Times reports Anthropic has agreed terms on a reported $30 billion funding round at a $900 billion valuation. If finalized, the deal would further reinforce how aggressively investors continue backing frontier AI companies as infrastructure-scale platform businesses rather than traditional software startups.In research, we look at Talk is (Not) Cheap, a new paper examining whether existing LLM attack benchmarks actually cover the broader model threat landscape. The authors argue many popular evaluation frameworks repeatedly test similar failure modes while leaving major categories of attacks only weakly explored—or completely untested.In the headlines: Martha Stewart launches an AI-powered home management startup, OpenAI brings Codex into the ChatGPT mobile app, and AWS adds new agentic coding and lightweight reasoning models to SageMaker JumpStart.SourcesTechCrunch – OpenAI security incident https://techcrunch.com/2026/05/14/openai-says-hackers-stole-some-data-after-latest-code-security-issue/Financial Times – Anthropic funding round https://www.ft.com/content/9deae3c6-716d-4f4d-8b09-434d8519f847arXiv – Talk is (Not) Cheap https://arxiv.org/abs/2605.15118v1Fast Company – Martha Stewart AI startup https://www.fastcompany.com/91542596/martha-stewarts-new-ai-startup-a-good-thing?utm_source=postup&utm_medium=email&utm_campaign=technology&position=1&partner=newsletter&campaign_date=05152026The Verge – Codex in ChatGPT mobile app https://www.theverge.com/ai-artificial-intelligence/930763/openai-codex-chatgpt-ios-android-app-previewAWS – New models in SageMaker JumpStart https://aws.amazon.com/about-aws/whats-new/2026/05/agentic-reasoning-models-on-sagemaker-jumpstart/