ChatGPT reaches 900M weekly active users
What Happened
OpenAI shared the new numbers as part of its announcement that it has raised $110 billion in private funding.
Our Take
ChatGPT hitting 900M means it's basically the browser now. Everyone owns a credit card, a phone, and a ChatGPT account. The number itself isn't shocking — what's wild is the $110B raise. That's not capital for growth, that's capital for entrenchment. They're building moats. At that valuation, you're not funding product; you're funding dominance. The installed base is locked. Now it's infrastructure, data, and making sure no startup outflanks them. Classic big tech playbook (and it works).
What To Do
If you're building an LLM product, you're not competing with ChatGPT's features anymore — you're competing with its defaults.
Builder's Brief
What Skeptics Say
Weekly active users is a self-reported, unaudited metric with no standardized definition; at 900M, a large share are likely low-frequency or casual users who generate minimal revenue and don't validate the $730B valuation.
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