How Microsoft Copilot ties Windows, Office, Azure AI and the OpenAI deal into one bet, and whether enterprises will pay enough to justify it.

Google Gemini now answers billions of queries, but those AI answers threaten the search-ads engine that funds Alphabet. Here's the real tension.

How Anthropic built Claude AI into an enterprise favorite: constitutional-AI safety, Amazon and Google backing, and a real fight with OpenAI.

How OpenAI scaled ChatGPT to 800M weekly users, built an API business, and reshaped its Microsoft deal, plus the commercial pressures ahead.

xAI Grok is Elon Musk's late but well-funded AI bet. Inside the models, the X data and compute edge, and whether it can catch OpenAI and Google.

Why Meta Llama models are free to download, what open-weight really means, and how the open-vs-closed fight is reshaping the AI market.

How the "AI co-worker" raced to a $4B valuation before hospitals realized ROI didn't add up

How Perplexity is betting AI can repair the broken bargain between platforms and the press