AI builder. Obsessed with what agents do to business | Amsterdam
Amsterdam, The Netherlands
Joined August 2025
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Martin retweeted
i'm sorry i dont care which model made this but it blows my mind that this is made by an llm AND runs in the browser
claude.ai/artifact/BGY1SztrA…
Martin retweeted
I had early access to Fable 5.2 for a bit & I think it crosses the line into being a sort of Jagged AGI. Here, I have it launch a business, do academic research, hack hardware, build 3D models & more. I think it is a good illustration of limits & powers: oneusefulthing.org/p/fable-5…
Martin retweeted
Which Claude model should you build with?
Our new guide breaks down when to use Fable 5.2, Opus 5.5, Sonnet or Haiku. It also covers when to adjust effort instead of switching models, and how to save cost by putting subagents on smaller models.
claude.dev/blog/which-claude…
Martin retweeted
Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges.
They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision.
Martin retweeted
During pre-release testing, Claude Fable 5.2 and Claude Mythos 5.2 worked on ambitious projects in many different fields. Here are a few.
From a one-paragraph prompt, Fable 5.2 designed three working electronic devices, including this home voice assistant hub.
Martin retweeted
Spoke to an Anthropic employee today. They have a near-100% p(doom), but they think the only chance of survival is that they're somehow completely wrong about alignment and it turns out to be solvable, and the only way to get there is by accelerating capabilities as fast as possible. They were much more confident that humanity would never have the political will to do what needs to be done to stop ASI development than that alignment would be solved, even though they think alignment will almost certainly not be solved
They have not called their elected representatives to inform them that this is what they believe
Martin retweeted
My respect for Elon Musk has mostly vanished, but I still thought that at least he is a good engineer (Teslas are great cars). But that last bit also got a blow after hearing him say that it is easier to "cool things down" in space. The opposite is true. A vacuum is the best possible isolator. In space you can only dissipate heat through radiation. It is extremely unlikely these data centers in space will ever happen (and certainly not in our lifetimes).
Martin retweeted
Weekend hack: HackerTube. I was annoyed with YouTube's recommendations so I had Claude filter down 43M comments over 20 years of HN to 6,454 videos that keep being recommended. *Significantly* better viewing experience, ~2 hours with Opus 5.5:
hackertube.org/
- Excellent recs without any logins (state is kept in local browser session)
- Thumbnail is a representative frame from middle of the video instead of the super duper A/B test hyper-optimized user uploads
- Underlying data from the comment analysis as one zip file, point your Claude at it and ask for your own version
- HackerTube Longs ✊
A bit more on the process:
I use Claude Code (desktop app for Mac), Opus 5.5 on Medium effort as my default. I only talk to Claude and have it do everything, the only "manual work" I helped with in tandem was in the browser (reminiscent of MenuGen): 1) I had to create some kind of API key from Google Cloud UI to query YouTube for video metadata, 2) I booted up a VPS box for serving and 3) I bought the domain name. Once the box was up I gave Claude the IP and told it update, secure, harden, deploy and optimize the code, and it did the whole thing.
Many awesome projects that would have normally taken weeks/months even can now be few-shotted for breakfast. What else are we not thinking of.
Martin retweeted
startup killed before it actually started
I recreated subvocal in 9 minutes with one prompt for AirPods Pro 3.
Source: github.com/joeblau/subvox
Martin retweeted
Calling it now.
AI is going to usher in a whole new era of software development. I’m calling it Software as a Service.
People will want to use these tools but they’ll realize they don’t want to spend the time to maintain and update them over time.
This will create a whole new category of businesses and entrepreneurs that can take on that task for businesses that would rather work on their core products.
AI is changing everything. This is a whole new paradigm of thinking about the way we interact with software.
American hiring rules are genuinely insane.
For example, if you work for a company in the US and you get sick, federal law requires your employer to pay you 0% of your wages. For 0 days.
If you're lucky enough to qualify, you get 12 weeks of unpaid leave. After that they can fire you. And since your health insurance comes with your job, you lose that too.
While you're sick!
European hiring rules are genuinely insane.
For example - if you own a company in the Netherlands and one of your employees gets sick, you are required to pay at least 70% of their wages for up to 2 years.
If they can't go back to work after 2 years and you haven't done enough for their reintegration, you pay their wages for 1 more year. And you can't fire them until after that extra year!
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Martin retweeted
Our robots built this in the city of Almere: curved walls, different types of bricks and bonds, indented text.
Real world deployment, insane complexity, 100% of every brick done by our robots, with another 15 houses to come in the coming weeks.
