Theo Browne Says Today Was His Last Day at Anthropic and He Is Preparing His Next Thing
Today was my last day at Anthropic. I am so thankful for the time I got to spend there. I couldn't be more thankful for the time I spent and the connections I made. Will be taking some time off as I prepare for my next thing. I'll share more soon :)
Context
Theo is one of the most followed developer voices in AI, and his exit comes a day after Claude Code's Cat Wu also left, adding to talk about team changes at Anthropic before its IPO.
Theo Browne (@theo) runs the T3 developer tools and a popular tech video channel, and he worked at Anthropic. On Nov 3, Cat Wu, an early Claude Code team member, said they had also left Anthropic, as covered in the Nov 3 deck.
Deep dive
Theo Browne (@theo) posted on the morning of Nov 4 ET that it was his last day at Anthropic.
He writes that he is thankful for the time he spent there and the connections he made. According to the post, he will take some time off while he prepares for his next thing, and he says he will share more soon. He does not say why he left or what the next thing is.
The post came hours after he wrote that he was about to vaguepost harder than ever, and about half an hour before he quote posted a viral claim that Anthropic's IPO was cancelled. In that quote post he said he is quick to call out misinformation from the account that made the claim, but that he had heard similar news from a few sources. That claim remains unverified, and it is covered in the Nov 3 deck.
The departure follows Cat Wu's post on Nov 3 about leaving Anthropic after helping build Claude Code. Anthropic had not commented on either move in the posts found during this scan.
Theo's post passed 150,000 views within a few hours.
What to expect next
Watch for Theo's announcement of what he does next, which he says is coming soon. Followers will look for whether more Anthropic staff announce exits in the coming days. Any comment from Anthropic on team changes, or a clear update on its IPO plans, would help separate real news from rumor. His large audience means his next move will get wide attention among developers.