September 21, 2026

TechCrunch Top 3

Meta's Muse is outpacing ChatGPT’s early mobile launch: Meta’s new AI agent Muse has racked up more downloads and daily active users in the U.S. and Canada than ChatGPT did over the same period after its mobile debut, according to new estimates from Appfigures. Read More

X will now tell users when governments have forced it to limit their posts: X is expanding its “Under the Hood” transparency tool to show when posts have been downranked or withheld in response to local laws and government demands, including which country made the request. Read More

OpenAI forms math advisory group as its AI resolves more than 100 open problems: The group won't be given leeway to slow down or redirect OpenAI's ongoing mathematical research. Read More

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Afternoon Must-Reads

Oura's $2.2B IPO is mostly a payday for existing shareholders: Forerunner Ventures plans to sell its entire stake in Oura for as much as $1.26 billion, according to Oura's latest IPO filing. Read More

Meta's AI agent has been blocked from using Amazon.com: Amazon has its own cohort of foundation models, along with one of the most popular inference platforms on the internet. As long as they're under no legal obligation to open the doors to Muse, why would they? Read More

Google's $899 Googlebook is a bet that you'll buy a new laptop for Gemini: Google’s AI-native Googlebook ties Gemini to the cursor, dictation, widgets, and other parts of the desktop experience. Read More

With Tabby, a former accountant is using AI to make accountants obsolete: Tabby is designed to be a real-time bookkeeping interface, handling clients’ paperwork as it gives them up-to-the-minute data on their business’s profit and loss. Read More

Kairos Power gets up to $100M from Samsung group to build nuclear reactor for Google: Future Google supplier Kairos Power inked a deal with Samsung C&T to help build its first 50-megawatt nuclear power plant. Read More

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Last but Not Least

Corridor raises $25M seed to build a health benefits brokerage for SMBs: Corridor focuses on SMBs, which it says traditional brokerages often overlook because small accounts generate lower commissions than larger accounts. Read More

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