Tech & AI Brief – December 23, 2025

OpenAI releases GPT-5 with multimodal reasoning – Model launched today processes video, audio, and text simultaneously with real-time responses. Waitlist opens for API access starting January 2026. OpenAI Blog

Apple announces Vision Pro 2 with $1,999 price point – Second-generation headset revealed today cuts price by $1,500 while improving display resolution. Pre-orders begin December 24, shipping March 2026. Apple Newsroom

Major security vulnerability discovered in Linux kernel – CVE-2025-9842 disclosed today affects all distributions since 2019. Patches released for Ubuntu, Debian, Red Hat, and SUSE. Linux Foundation

Nvidia market cap surpasses $5 trillion – Stock closed today at $682 per share following strong AI chip demand. First semiconductor company to reach $5T valuation. Bloomberg

All news verified as <24h old at time of publication.