John Karpentar

John Karpentar

Writes about artificial intelligence and the companies building it. Covers model releases, research and the business of AI.
Anthropic's $6 Billion Decart Bet

Anthropic's $6 Billion Decart Bet

How a reported Decart acquisition signals that the AI arms race is quietly shifting from building bigger models to serving cheaper tokens.
John Karpentar AI 7 min read
Meta's Open-Weight Gambit

Meta's Open-Weight Gambit

How Zuckerberg's decision to give away Meta's best model reframes the open-versus-closed fight and turns it into a contest with China.
John Karpentar AI 6 min read
Cognition's $40 Billion Sprint

Cognition's $40 Billion Sprint

How an AI coding startup's valuation tripled in a year, and what that velocity says about the real price of software.
John Karpentar AI 6 min read
Meta's Open Superintelligence Bet

Meta's Open Superintelligence Bet

How Zuckerberg's 6,500-word manifesto and a fresh open-weight model reframe Meta's AI strategy as a fight over who controls the technology — not who builds the best model.
John Karpentar AI 6 min read
River AI's $1.1 Billion Head Start

River AI's $1.1 Billion Head Start

How a two-month-old startup from an xAI co-founder raised a mega-round by betting that the future of AI is personal, open, and owned by the user — not rented from a lab.
John Karpentar AI 6 min read

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