Interesting Ghostwriter hackathon in Dallas, with some fun billboards 👻 8 companies across financial services, healthcare, retail and more took part in building agents to handle everything from loyalty programs and subscription benefits, all the way to retirement planning and claims intake. With Ghostwriter, anyone can build. • “It blew my mind what I was able to get done in a few hours.” • “I've been a PM for 12 years and this is my first time attending a hackathon and actually building.” • “I was impressed with how quickly I was able to learn. Other tools I’ve seen would’ve definitely taken much longer to build an agent.”

The problem most people have with ghostwriters is that "It's obvious people have ghostwriters". No. It's obvious when they're bad. You'd be surprised how many of your favorite accounts are not run by the people you think they are. Few.

Today, most agents are built with the help of other agents like Sierra's Ghostwriter. Yesterday, Sierra open-sourced hyper-𝜏-bench (published as 𝜏^𝜏-bench), a new long horizon agent evaluation that measures how well models can not only act as an agent, but construct one.

Can AI create good art? @fredgraver thinks the answer depends on you. The Emmy Award–winning writer, producer, and founder of AI Writer’s Studio says AI can help with many parts of the creative process—but it can’t give you something to say. On this week’s episode of The Every Podcast, @NataliaZarina sits down with Graver. They discuss: • Why every writer should have a ‘who I am as a writer’ document. • The cast of AI collaborators he’s built into his own writers’ room. • The human quirks that make characters endearing—the part he insists AI can’t supply. Timestamps: 0:00 Introduction 1:37 Fred's path from National Lampoon and Letterman to Twitter and Microsoft 9:39 The "I want in" instinct behind every career pivot 15:11 How Best Week Ever and Metallica taught Fred to build with the audience 18:53 Using AI as a virtual writers' room, not a ghostwriter 24:07 Codifying industry expertise and studio culture into an AI core 28:36 The three phases of making entertainment with AI 33:37 Why you should brain-dump your idea before opening AI 46:47 Fred's thesis: Success is knowing what the audience wants before it does 52:12 Fred's day-to-day workflow across Claude, ChatGPT, and NotebookLM