Claude

This Week in Startups

uses recommends mentioned

"I'm spending as a company $40,000 on Claude, Cursor, Lovable, ElevenLabs. This long tail of things. And I calculated I'm getting $2 million in value."

Greg Isenberg

uses recommends mentioned Opus 5.5 · newest

"I was one of those people that hated short form video. I like to consume it, but I hated it from a creation standpoint. I hated the editing around it. Now I have Opus 5.5 as my editor, and I can go and create short form on the fly when it works fo..."

Chris Koerner

uses recommends mentioned

"Yeah, I kind of just did that. I said, "Find me 20 highly engaged subscribers that likely have a high net worth based on everything you or Beehiiv knows about them." ... Oh, look at this. Look at this brand new segment."

Liam Ottley

uses recommends mentioned

"You need to learn how to build. So, get yourself a Codex or a Claude plan. Build some stuff for yourself."

Tom Bilyeu

uses recommends mentioned

"I think people look at AI as a commodity, and I use Claude right now, but if OpenAI came out with something that was substantively better, I would switch immediately."

Riley Brown

uses recommends mentioned Opus 5.5 · newest

"Claude Opus 5.5 right now, in my opinion, at least for the things that I'm doing, is the best at coding. And so it's best at creating apps, especially if it is very front-end focused... GPT-6 Soul is also frontier and it's amazing. It's just not t..."

Ali Abdaal

uses recommends mentioned Opus 5.5 · newest

"It took about 6 hours from start to finish, and it didn't cost anything on top of my Claude subscription. And now that I've done this once, I've firstly got all of the code that Claude generated, and so it'd be easier to do it again."

Peter Yang

uses recommends mentioned Opus 5.5 · newest

"Yeah, and this has only happened really in the past, basically with Opus 5.5... So I think this is a massive time-saver... I highly encourage everyone watching this to get Opus to make launch videos for everything or help it edit your videos."

Tim Ferriss

uses recommends mentioned

"Speak into Wispr Flow, for instance, so it transcribes your 10-minute brain dump, and you can throw it into something like Claude for cleanup."

Dan Shipper

uses recommends mentioned Fable 5.1 · newest

"We had Fable 5.1 launched last week and these are sick models. I made this Battle of Waterloo 3D historical reproduction that's historically accurate with a single prompt and it just ran for like 4 hours and then I got that. That's crazy."

"If you want to compare that against the best run so far of the models I've tested, this is Opus 5.5... it has these much more complex curved shapes."

"You can even use Claude to manage your browser and do your ads. This is a great moment in time right now where you can use AI to do those sort of things that were not possible before."

Ras Mic

uses recommends Fable 51 version old · newest is Fable 5.1

"Fable is in a class of its own. I built a Daytona alternative — spinning up your own sandboxes on a bare metal server. I built a multiplayer Vice City game. I ported Eve so it can fully run on Convex. This is something I could have done but it wou..."

Codie Sanchez

uses recommends

"Claude is the best at thinking and nuanced writing. You use Claude when you need to think through something deeply or when the quality of the reasoning matters or if you want to use agents."

Every

uses recommends mentioned Opus 4.82 versions old · newest is Opus 5.5

"The best model score is a 63 out of 100, which is Opus 4.8, which came out like 2 weeks ago. If you're a Claude person, just use 4.8."

Alex Finn

uses recommends Opus 4.82 versions old · newest is Opus 5.5

"Opus very expensive model. I think Opus 48's the smartest AI model out there. It's also very pricey. So if I'm doing high-level thinking and strategy, I'm going Opus."

Peter Diamandis

uses mentioned Opus 51 version old · newest is Opus 5.5

"Anthropic shipped Claude Opus 5. This is their fourth Claude 5 generation release and it approaches the frontier intelligence of Fable 5 at half the price. I made the switch immediately on Skippy for myself."

Kevin Rose

uses mentioned

"I'm playing with everything. Literally, like I can't keep track... But yeah, I'm using right now Claude, ChatGPT, Gemini for some things."

"I gave Claude a way to keep improving the skill and then check whether it's doing a good job. So the way the eval metric works, it gets Claude to generate the writing. It's given a brief... And that works. And it's kind of simple, it's kind of ele..."

"And so that allows me to still have fun and still play with my boy Claude, who's not really a boy, but you know, a business model masquerading as a personality, but it's very helpful. It's very helpful."

"I'll ask some other folks that know maybe a little more about tech, or I'll probably just ask Claude for Christ's sake."

"I don't think we talk about it, but I think Haiku from Anthropic is a pretty damn good product and in one day they could make it better just by adjusting the slider of how much Opus you get in Haiku. I literally use a massive amount of Haiku and f..."

"So the only tab that is really open is Claude. But we don't have the multiple tabs of like this, this, and this, cuz now it's all connected. I just asked Claude within the AI operating system; we've got 45 agents running right now."

"I love Claude. I'll literally just start a voice memo and I'll just go and go and go, and then I'll say, come back to me with five points... I just start a voice memo, talk for five minutes, and it's able to synthesize all of that information very..."

"In my case, we program these models. Well, now all of a sudden in Claude and ChatGPT, you know, I have a couple of expert programmers that work very quickly. They're not great at model design. They're not great at the empirical questions, but in t..."

Emad Mostaque

uses mentioned Fable

"You can access Fable 5.5 now, sometimes with Fable 5.1, and it literally generates entire video games out of the box. Like I generated one with 21 bosses, 15 different biomes, end to end. It's just a top-notch game that our QA testers, agents, tri..."

"I start with Grok, GLM-5.2, and I also put it into Claude and the results are as good or better. I can't even tell the difference between these."

"I'm a user of Claude. I think we get a lot of value for Claude. I think our people are able to do more because of Claude than they would otherwise be able to do. So our business grows faster, we can get more done in a shorter period of time. I thi..."

"Where I think Claude is great is being an editor so my content is free of mistakes and errors and calls out factually incorrect things, right? And so every time that I'm done writing one of my posts, I just drop the entire draft into Claude. It's ..."

Jason Lemkin

uses mentioned Haiku 5.5 · newest

"Haiku 5.5... it's almost as good for a lot of use cases as Sonnet. And it's a tenth or a twentieth the price. It's shocking, it's so cheap. Haiku 5.5 is like the first reasoning model, and you can dial up how much reasoning you want, where you can..."

"I've lived in Claude for a long time. So, it's the room I keep going back to and I will say, Claude, here's a folder of all my work. You know what I do? Let's talk about this... I will have a very long conversation with Claude about the reality of..."

Dave Blundin

uses mentioned Fable 51 version old · newest is Fable 5.1

"A month ago, to fine-tune these things required some huge engineering effort that required AI experts. Now with Fable 5, it's just a prompt."

"This is something that's gotten easier than ever. Like, absolutely, Claude is my data scientist. And so I would say now everybody on our team is constantly armed with very fine-grained analysis of failure modes and opportunities."

Claire Vo

uses mentioned Opus

"I really only do my coding in Claude and Codex."

"Then we take it, I sort of run it through AI as a brainstorming layer. I usually use Claude. Opus is ideal for this. You could use Sonnet... I don't let Claude write anything... I let Claude kind of roughly assemble it. And then I take the suggest..."

"I'm lazy, and I just asked Claude to use HeyGen to generate different characters and then have them speak a couple clips... and I didn't even ask for myself to be in there. That was actually Claude's discretion."

"I go to Claude and say, 'Hey Claude, read chapter eight and read chapter nine and write me a transition.' Woosh... Well, that turns out to be exactly right. I couldn't see it, but Claude could see it."

"I just gave Claude Pro, I think, permission to access my Gmail. And it's just... it sounds obvious, but it's just been mind-blowing. I get an email from someone saying, you know, a capital call on a fund I invested in three years ago... I just say..."

"It's probably 50/50 right now between Codex and Claude. And that's obviously changed a lot. Like I think 5 months ago I would have said it was mostly Claude. But the new Codex is really good."

Sam Parr

uses

"I had this idea where we basically exported his brokerage account, and we put it in Claude, and we asked it over the last 12 years, how many decisions did you make a year?"

a16z

recommends mentioned

"It feels artisan. It feels like it's got a soul, whereas I think in some sense the other models feel a little bit more robotic, a little bit more utilitarian"

"Open up a camera, record a quick video, have Claude edit it. Everyone's seen how good Opus 5.5 is at making shorts and stuff."

"Yeah, I would say for you need to be on Claude for sure. I would say preferably Claude Code or Codex, and honestly the 80/20 of it is you need to know how to use those tools and how to connect like MCPs and APIs."

"Yeah, I mean the models change every day. Right now, Opus 5.5, that's amazing. And then the GPT six, Luna and Opus, those are great. Yeah. And you get tons of usage from that for your 20 bucks a month."

"If you're a young person, just embrace these tools. Open Claude this weekend. Build on it and you will be infinitely employable for the rest of your life if you just embrace these tools."

Y Combinator

recommends mentioned

"If you haven't tried Claude Code in the last month, it's time to give it another shot. And if you have, you know what I'm talking about. It feels like AGI is here."

"If you're not using any AI tools or any platforms right now, I would just say jump into Claude and learn everything you can about Claude. Don't get distracted by all the other shiny objects out there based on what we know right now and what's work..."

"I encourage everybody to use cloud services as much as possible. Everybody should use ChatGPT and Claude — everybody should use that."

Ryan Carson

recommends mentioned Opus 4.55 versions old · newest is Opus 5.5

"The agents are smart enough now, Opus 4.5 is smart enough now that if you give it good acceptance criteria, it can do it."

"I would say Claude Max is my go-to. I feel it's insane. The Claude Max subscription is really underrated. I'd pay way more for it. I couldn't work without it."

"Opus 4.7. Finally, if you have some long horizon coding task, Opus 4.7 is really great for that."

"If I'm at a startup and I'm coding, I want to be using the frontier. I want every advantage I can get. For simple tasks like summarization or operations-type work, I'd probably be leveraging Sonnet or something."

"Go on Claude and say, 'Write me a novel. Write me write me a novel as if I'm on Coke.'"

"If you spent a weekend with some of these blogs and Claude, you would know more about credit card points than 90% of people in the world. I mean, probably 99."

"You know, get into claude, you know, teach yourself all the stuff and then go to small businesses because they're not going to understand how to do any of that shit at all."

Starter Story

mentioned

"I think Claude and Codex and all these tools have made it so easy to build. People like you, people like me who don't have that technical background can actually build something that looks good and works."

"This is about the time that Mythos came out, and if you kind of worked backwards... it probably costs, say, $3 billion to make Mythos."

Jordi Hays

mentioned Opus 5.5 · newest

"I think the current read is that they were using Opus 5.5 under the hood."

John Coogan

mentioned

"Let's go over to Andrej Karpathy because he hacked together HackerTube, which is he built his own YouTube... He has all the different comments and Hacker News submissions. He filters those through Claude and then creates a new YouTube, fully vibe-..."

Salim Ismail

mentioned

"You have to be able to swap out Claude or Gemini or another model. These models are leapfrogging themselves every week now."

"I think Opus 5.5 goes a long way to repairing what I've perceived as deficits in Anthropic's models to think about and visually reason."

"Because of agentic coding, tools like Claude, Cursor, and Codex, coding and creating code is no longer the bottleneck that it was a couple years ago for companies."

"We've all seen the videos, including my launch video co-director Donald's, where Opus 5.5 by itself can create unimaginably good motion graphics."

"Instead of having to call a system integrator, and it takes 3 months and hundreds of thousands of dollars to kind of reconfigure a line for a new setup, you can have a manufacturing engineer use Claude and do that in, you know, 20 minutes. And so ..."

"Right now, the way that we work, let's say, with Claude or ChatGPT is you type a prompt, you realize it wasn't exactly what you wanted, you sort of do a new prompt, and there's an iterative process."

"Really this really kicks off in November of '25 when Opus 4.5 comes out and supercharges Claude Code. That creates this mega product market fit moment for codegen."

"It's from these kids in, you know, Pakistan in their parents' bedroom using Claude or whatever. I don't even know what they're doing, but I can tell you they're amazing and they're going to crush."