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ChatGPT Gets Write Access to Google and Microsoft Productivity Apps
OpenAI announced on March 18, 2026 that its Google and Microsoft app integrations within ChatGPT now support write actions, transforming the assistant from a read-only companion into one that can actively modify documents, send emails, and manage calendars. Previously, ChatGPT could only read and summarize content from connected productivity apps.
Anthropic Captures 73% of New Enterprise AI Spending, Overtaking OpenAI
Anthropic has overtaken OpenAI in a critical business metric: new enterprise customer spending. According to Ramp's March 2026 AI Index published on March 18, Anthropic now captures over 73% of all spending among companies purchasing AI tools for the first time. The shift has been swift - as recently as early December 2025, OpenAI held a 60/40 advantage, and the split was 50/50 just ten weeks before the latest data.
OpenAI Rolls Out GPT-5.4 Mini and Nano to All ChatGPT Users
OpenAI announced on March 18, 2026 that GPT-5.4 Mini and Nano are now available across all ChatGPT tiers, including the free plan. Free and Go users can access GPT-5.4 Mini through the Thinking feature in ChatGPT's plus menu, while paid users receive it as a rate limit fallback when GPT-5.4 Thinking hits capacity. The Nano model is available through the API only.