When you're creating posts, there are things you learn very quickly about how to use Substack, but after you've been using it ...

A day after journalist Matt Taibbi—whom the billionaire CEO Elon Musk selected, to great fanfare, to publicize the so-called Twitter Files to the world—suddenly and very publicly abandoned Twitter, ...

Substack, the newsletter startup that has attracted prominent writers including George Saunders and Salman Rushdie, laid off 13 of its 90 employees on Wednesday, part of an effort to conserve cash ...

Substack Inc. today launched Notes, a platform where Substack creators can interact with subscribers and where the entire experience looks very much like Twitter. The differences are only in the ...

AI could turn the internet into a mindless click machine — or fuel a cultural comeback, says Substack's CEO. Chris Best, the cofounder and CEO of Substack — the online platform best known for its paid ...

AI could flood feeds with slop or give creators "more creative leverage," said Substack CEO. The CEO of the newsletter platform said attention is the real scarcity in the media landscape. AI-generated ...