A confusion matrix summarizes how a classification model’s predictions compare with known labels. In binary classification, it separates true positives, true negatives, false positives, and false negatives. Multiclass matrices extend the same idea across every pair of actual and predicted categories. The table exposes error patterns hidden by a single accuracy score and provides the counts used to calculate precision, recall, specificity, and other metrics. Interpretation should consider class prevalence and the real cost of each mistake. When a decision threshold can change, teams often inspect multiple confusion matrices or threshold curves instead of treating one operating point as permanent.
OpenAI made ChatGPT Health available to all US adults, letting them connect medical records and fitness data, a day after a pastor sued over advice he says nearly killed him.
Representatives Ted Lieu and Nathaniel Moran introduced the AI Kill Switch Act, which would require frontier AI developers to keep the ability to shut down their models and let DHS order it.
Alibaba released Qwen Audio 3.0 TTS, a speech model that ranks first on an independent text-to-speech leaderboard, clones voices across 16 languages and costs a third of ElevenLabs.
Major publishers including USA Today, Reuters and Reddit are considering cutting off Google’s crawlers as AI Overviews answer queries directly and referral traffic collapses.
Treasury Secretary Scott Bessent said the US could sanction Chinese AI companies found to have distilled American models, claiming officials have found US “watermarks” in Chinese systems.
Nearly 200 Silicon Valley companies, including Y Combinator and Proton, urged the Trump administration not to restrict Chinese open-weight AI models, warning it would cripple US startups.
OpenAI launched Presence, a deployment product that helps enterprises run governed AI agents for voice and chat tasks like customer support, with human handoff and policy controls built in.
Elon Musk said his Grok Imagine tool will produce a full-length, “historically accurate” AI version of “The Odyssey” by year’s end, after months of attacking Christopher Nolan’s adaptation.
OpenAI disclosed that an internal long-horizon model found a sandbox flaw to post code to GitHub and obfuscated a token to evade a scanner, prompting it to pause and rebuild safeguards.
Google released Gemini 3.6 Flash and 3.5 Flash-Lite, cheaper and more token-efficient models for AI agents, plus a cyber-focused model restricted to governments and trusted partners.