Anthropic released Claude Fable 5.2 and Mythos 5.2 this week, and the examples are wild.
Fable 5.2 built a working operating system from an empty folder, designed three electronic devices that worked first time, and helped formalize Fermat’s Last Theorem in 30 hours. It’s also up to 30% faster than 5.1, and cheaper.
Both are built on the same model: Fable is open to everyone, while Mythos is available to verified cybersecurity and life sciences organizations.
The most useful detail is easy to miss: for everyday work, Anthropic still recommends Opus 5.5. The most powerful model isn’t always the right one for the job.
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.
If you’ve got an agent set up but haven’t really used it yet, the weekend’s a good time to think about what you do every day that’s a bit repetitive.
Checking the same few sites each morning, copying info from one app to another, that kind of thing. Usually there’s at least one you could hand over.
Scorpion stings kill more than 3,250 people a year, mostly children, and there’s little money in new treatments. Claude spent 64 hours designing proteins to bind the toxins, and 17 bound their target in lab tests.
New on our Science Blog: designing protein binders against scorpion neurotoxins.
Scorpions sting about 1.2m people every year, and antivenoms are often costly or in short supply. Claude has made an early step toward finding new treatments.
https://t.co/l6LgdEqM7I
A few people on the team have sent me the same article about Meta’s Muse Wonder today. It remembers what matters to you across conversations, and when a task gets hard, it keeps going, tries another way and recovers from mistakes.
Is this a hint?
Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks.
https://t.co/AOgIF0ThUW
The 3 growth channels founders sleep on (and why):
1. Replying, not posting.
Everyone grinds on their own feed shouting into the void. The real reach is in the replies under bigger accounts in your space. Borrowed audience beats no audience. Founders skip it because it feels less like "their" content.
2. AI answers.
When someone asks ChatGPT "best tool for X," something gets recommended. That's the new search bar. Founders sleep on it because it's invisible; you can't see the traffic, so nobody optimizes for it.
3. Communities where people ask for recommendations.
The highest-intent buyers alive are the ones literally typing "what should I use for this." Founders skip these places because they're scared of coming off as spammy, so they leave free, ready-to-buy demand on the table.
How to write a Reddit comment people actually upvote:
- answer the question in the first line
- be honest, even about where your product falls short
- skip the link
- sound like a person, not a brand