The Ledger
Every statement that passed quotation and attribution checks. Mix any filter with any other: certainty 1/5, debate potential 5/5, or both at once.
why aren't all 67 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 0 checkable ones are still open, waiting for their date. predictions held up or didn't; assertions are supported or contradicted. on every card: ▮▮▮▮▮ certainty · ▮▮▮▮▮ debate potential. speakers are clickable
Mike Krieger says Claude has 'no chill' in group Slack channels
“I like to say internally, like Claude has no chill. Like if you put Claude in a Slack channel, it will chime in either way too much or too little.”
Rauch: Claude, Grok, and Midjourney run on Next.js and Vercel
“So when you use Claude, Or Grok or Midjourney. You're using Next.js. You're using for sales technologies.”
Nguyen: Claude's librarian personality reflects the craft of its Anthropic creators
“And it's like the reason why cloud has so much more personality and like is more like a librarian. I don't know. Like, I don't know. I am like visualizing Cloud being, like, a librarian. Like very, like, nerdy or something. It's because I feel like it's a refl…”
Krieger: Best product managers rapidly prototype UI designs directly using AI models
“I think prototyping with these models is a thing that is underused. Like, our best PMs do this, where we'll get in some long conversation about, like, should the UI be this or that, and before our designers have even, like, picked up their Figma, like, our, of…”
Weil: AI model behavior and personality are core product responsibilities
“Yeah, model behavior is absolutely a product role. Like, the personality of the model is, is key, and there are interesting questions around how much should it customize versus how much should, you know, OpenAI have one personality, and Claude has some distinc…”
Penn: Built Claude skill using Crucial Conversations to coach management conversations
“I don't think it's necessarily just about raising the IQ of like experiences we build, but also I use it a lot and actually like prepping for how to have better conversations in the moment during like crucial conversations. So I love that book. And so I actual…”
Penn: Anthropic discussed computer use for Claude at founding
“I think even at the founding of the company, researchers were talking about how do we get clawed to you? Use a computer. How do we get AI to, like, navigate a screen, right?”
Penn: 80% of early Claude instruction failures were invalid JSON outputs
“And what I saw was something like 80% of what people meant in the early days for this failure was Claude would not write the right JSON.”
Penn: Claude scores 99.9% to 100% on JSON schema formatting evals
“When we have versions of Claude, we actually run that eval and just check. I think at this point it's always a hundred percent or like 99.9. And so it's no longer a pain point.”
Fung uses automated Claude routines to draft summaries and PRs overnight
“Like now I just have a routine that automates all this for me. And then there's also, it's almost like before I would, you know, be able to kind of like, you know, generate some prompts, but now with routines, it's almost like I'm, you know, having an agent he…”
Human reviewers were a major engineering bottleneck before Claude code reviews
“I think we didn't even have cloud code reviews last year. And so speaking of bottlenecks, that, that was a really, really big bottleneck of, you know, the human reviewers.”
Avasare: Claude Cowork handles room bookings, email filtering, and Brex expenses
“And so I get called to book my meeting rooms. Like I don't book meeting rooms. Claude archives, sort of my email first pass at clearing out my inbox. I don't do any of my reimbursements and Expenses. Claude will go to Benapas and like file the reimbursements. …”
Wen shifted her Claude chat usage entirely to Cowork for long tasks
“I I've basically shifted all of my chat use cases over to cowork. Cause I've been finding that, yeah, it sort of is better at these longer running tasks. And most of the things I was asking cloud for are these longer running tasks.”
Wen: Claude writes Anthropic's code but struggles to use internal design systems
“Right now Claude is like writing a lot of the code and it's like not always, it's not always like picking up stuff in the design system and whatnot.”
Arnovitz: Localized StudyMate in two days using parallel AI agents
“I was fully localizing study mate from Hebrew to English, which I did in two days, which would probably take a dev team weeks. And I was building a personal site, which went from no domain, no nothing to live on a domain within an hour and a half. And I was do…”
Krieger: Anthropic is training Claude to teach users its own features
“One thing we're trying to get better at, and that's also letting the product be like educational in a very literal way, which is like the thing we did not do early and now we're changing is just tell Claude more about itself, which was like, you know, it's in …”
Komoroske: I talk to Claude daily and cannot work without it
“I mean, I talked to Claude 20 times a day. You know, I just have long conversations with it. I have tons of projects loaded up with all kinds of contexts on different topics. And I literally could not do the job I do now without having a conversation partner l…”
Penn: Anthropic UI ratings and sales feedback route directly to research PMs
“If you thumbs up or thumbs down on any of our product surfaces, if you contact your salesperson with feedback about the model, it will make its way to me. We actually, with every, like, research model, I actually get pretty close into understanding favorabilit…”
Krieger: Rick Rubin partnered with Anthropic after creating art with Claude
“We had our, one of our co-founders, Jack Clark is our, you know, head of policy and he got connected to Rick Rubin. Cause I think he's been thinking a lot about Coding the future of coding and creativity, and they've stayed in touch and, you know, Rick got exc…”