AI spending vs real GDP & ChatGPT ads and trust - AI News (Feb 24, 2026)

Today's topics: AI spending vs real GDP - Goldman Sachs economists say 2025’s AI capex added “basically zero” to U.S. GDP growth, citing imports (chips, hardware) and measurement gaps in AI productivity. ChatGPT ads and trust - OpenAI is testing sponsored ads in ChatGPT for U.S. Free/Go tiers, sometimes appearing after the first prompt, raising UX and trust questions despite ad separation and privacy claims. Personal Brain OS in Git - Muratcan Koylan’s “Personal Brain OS” is a no-database, file-based context system inside a Git repo using progressive disclosure, instruction hierarchies, and episodic memory logs. Agent security and monitoring - Wiz’s “Securing AI Agents 101” highlights agent risks—tool access, pipelines, decision integrity—and the need for practical controls, though the resource is gated behind a lead-gen form. Claude Code Security preview - Anthropic’s Claude Code Security (research preview) scans repositories for vulnerabilities, runs multi-stage self-verification to cut false positives, and suggests human-reviewed patches with severity/confidence. AI fluency and artifact blind spots - Anthropic’s AI Fluency Index analyzes ~9,830 Claude conversations and finds iteration correlates with better collaboration behaviors, but artifact generation can reduce skepticism and fact-checking. Token-efficient web frameworks - A 19-framework test finds minimal web frameworks are most token-efficient for AI coding agents; ASP.NET Minimal API is lowest-cost, while full-stack frameworks vary widely on setup overhead. Coding agents: tooling vs process - Developers argue Claude wins on “process discipline” in real workflows, while another analysis explains why Electron still makes sense for cross-platform apps given last-mile maintenance realities. Open-source agent framework OpenClaw - OpenClaw positions itself as a model-agnostic, self-hosted agent framework with channels, skills, and sandboxing—powerful for automation but demanding in ops and security hygiene. AI wearables and silent voice - Apple is reportedly accelerating AI wearables—smart glasses, a pendant, and camera AirPods—plus a “silent voice” angle via a rumored Q.ai acquisition to make Siri usable without speaking aloud. Firefox 148 AI kill switch - Firefox 148 adds an AI kill switch to disable AI features permanently, plus security upgrades like Trusted Types and Sanitizer APIs and more translation/accessibility improvements. Math proofs and evolving algorithms - OpenAI published full “First Proof” attempts with several proofs likely correct and one retracted; a separate paper uses LLM-driven evolution (AlphaEvolve) to discover new multiagent game algorithms like VAD-CFR and SHOR-PSRO. AI-assisted FreeBSD Wi‑Fi driver - A developer used AI agents to build a new FreeBSD brcmfmac driver for a Broadcom Wi‑Fi chip by generating a clean-room spec first, avoiding a messy LinuxKPI port and achieving WPA connectivity. https://x.com/koylanai/status/2025286163641118915?s=12&utm_source=tldrai) https://gizmodo.com/ai-added-basically-zero-to-us-economic-growth-last-year-goldman-sachs-says-2000725380 https://vladimir.varank.in/notes/2026/02/freebsd-brcmfmac/ https://martinalderson.com/posts/which-web-frameworks-are-most-token-efficient-for-ai-agents/?utm_source=tldrai) https://www.anthropic.com/research/AI-fluency-index https://serverhost.com/blog/firefox-148-launches-with-exciting-ai-kill-switch-feature-and-more-enhancements/ https://www.anthropic.com/news/claude-code-security?utm_source=tldrai) https://openai.com/index/first-proof-submissions/?utm_source=tldrai) https://mesuvash.github.io/blog/2026/rl_for_llm/?utm_source=tldrai) http://amplitude.com/amplitude-ai-your-unfair-advantage?utm_source=tldr&utm_medium=newsletter&utm_campaign=ai-platform-launch&utm_content=AI) https://www.wiz.io/lp/securing-ai-agents-101?utm_source=tldr-ai&utm_medium=paid-email&utm_campaign=FY26Q3_INB_FORM_Securing-AI-Agents-101&sfcid=701Py00000RTEWMIA5&utm_term=FY27Q1-tldr-ai-quicklinks&utm_content=AI-Agents-101) http://amplitude.com/amplitude-ai-your-unfair-advantage?utm_source=tldr&utm_medium=newsletter&utm_campaign=ai-platform-launch&utm_content=AI) https://greenido.wordpress.com/2026/02/21/leveraging-openclaw-as-a-web-developer/?utm_source=tldrai) https://www.wiz.io/lp/securing-ai-agents-101?utm_source=tldr-ai&utm_medium=paid-email&utm_campaign=FY26Q3_INB_FORM_Securing-AI-Agents-101&sfcid=701Py00000RTEWMIA5&utm_term=FY27Q1-tldr-ai-quicklinks&utm_content=AI-Agents-101) https://winbuzzer.com/2026/02/21/chatgpt-ads-now-appearing-first-prompt-free-users-openai-xcxwbn/?utm_source=tldrai) https://www.testingcatalog.com/microsoft-develops-copilot-advisors-to-debate-on-any-topic/?utm_source=tldrai) https://arxiv.org/abs/2602.16928?utm_source=tldrai) https://9to5mac.com/2026/02/21/apple-ai-smart-glasses-rumors-sounding-more-exciting/?utm_source=tldrai) https://framer.link/TLDRAI) https://www.bhusalmanish.com.np/blog/posts/why-claude-wins-coding.html?utm_source=tldrai) https://www.dbreunig.com/2026/02/21/why-is-claude-an-electron-app.html?utm_source=tldrai) https://framer.link/TLDRAI?utm_source=tldrai) https://ampcode.com/news/the-coding-agent-is-dead?utm_source=tldrai) https://x.com/anthropicai/status/2024210053369385192?utm_source=tldrai)