AI News for March 1, 2026 — 7min.ai

[NEWS] Claude surges to #1 on App Store as 'Cancel ChatGPT' movement goes mainstream: Claude overtook ChatGPT as the most-downloaded US App Store productivity app Saturday, fueled by users defecting over OpenAI's Pentagon deal.
[NEWS] OpenAI shares Pentagon contract language, Altman admits deal was 'rushed': OpenAI published its contract terms with the Department of Defense, claiming its agreement has more guardrails than any prior classified AI deployment.
[NEWS] OpenAI promises Canada tighter safety protocols after ChatGPT flagged shooter's chats but didn't alert police: OpenAI told Canada's AI Minister it will strengthen safety protocols following a school shooting in Tumbler Ridge, British Columbia, that killed eight people.
[NEWS] OpenAI fires employee for insider trading on prediction markets: OpenAI terminated an employee who used confidential company information to trade on Polymarket and other prediction markets.
[RESEARCH] Frontier LLMs from GPT-5 onward lose up to 33% accuracy in extended conversations: Latest LLMs degrade significantly when tasks span multiple conversation turns.
[TOOLS] Perplexity open-sources embedding models matching Google and Alibaba at a fraction of memory cost: Perplexity released two open-source embedding models, pplx-embed-v1 and pplx-embed-context-v1, designed to preselect relevant web pages for AI-powered search.
[NEWS] OpenAI calls Stuart Russell a 'doomer' in court despite co-signing his AI extinction warning: OpenAI filed a motion to exclude testimony from AI professor Stuart Russell in the ongoing Elon Musk lawsuit, dismissing him as a "prominent AI doomer" with "dystopian" and "speculative" views.
[NEWS] Nvidia forms 6G-AI alliance with Nokia, SoftBank, and T-Mobile: Nvidia is teaming up with Nokia, SoftBank, and T-Mobile to build sixth-generation phone networks designed as platforms for AI services and devices.
[NEWS] AI-resistant 'Halo' companies push UK and EU markets to record highs: Investors are piling into "Halo" stocks (heavy assets, low obsolescence) as a hedge against AI disruption, pushing UK and EU markets to record levels by end of February.
[OPINION] AI layoffs become the brutal metric companies use to prove AI investments are paying off: Companies are increasingly citing AI capabilities as justification for mass layoffs, turning headcount reduction into a proxy metric for AI ROI.

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