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Anthropic rolls out public version of Mythos without cybersecurity capability

Key Takeaway: Anthropic is releasing its most powerful AI model yet in two versions: Mythos 5 for trusted partners and Fable 5 for the public, with strict guardrails to prevent misuse in cyberattacks, biology, and chemistry.

More Insights:

• Claude Mythos 5 is being limited to select partners, government groups, and some biology researchers because of its advanced vulnerability-discovery abilities.

• Claude Fable 5 uses the same underlying model but blocks risky cybersecurity, biology, and chemistry requests by rerouting them to the older Claude Opus 4.8.

• Anthropic says it tested Fable 5 for over 1,000 hours and found no universal jailbreaks, but real-world safety remains unproven.

• The models cost $10 per million input tokens and $50 per million output tokens, making them more expensive than Anthropic’s other public models.

• The launch shows Anthropic’s tension between commercial pressure to release powerful AI and the safety risks of giving everyone access to Mythos-level capabilities.

Why it matters: Anthropic is trying to split the future of AI into two lanes: maximum power for trusted insiders and restricted power for everyone else. That may be safer for now, but it also raises a bigger question—who gets access to the most capable AI systems, and who decides?

Related:
- Anthropic says these topics are too dangerous to let its Fable 5 model talk about
- Cybersecurity researchers aren’t happy about the guardrails on Anthropic’s Fable
- Anthropic’s Fable 5 can make weirdly fun video games with the click of a button

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Read Sam Altman's plan for OpenAI as it enters its 'third phase'

Key Takeaway: OpenAI says it is entering its “third phase,” focused on making advanced AI abundant, affordable, safe, and useful for everyone — not just controlled by a few powerful companies or governments.

More Insights:

• OpenAI’s three big goals are building an automated AI researcher, accelerating the economy, and giving everyone access to a personal AGI.

• Sam Altman and Jakub Pachocki argue that AI should expand human capability, not replace human judgment or automate everything.

• OpenAI believes AI systems may soon help perform a major share of AI research, possibly by March 2028.

• The company is calling for global coordination, shared safety standards, and even the ability to slow frontier AI development if risks grow too fast.

• The post compares AI to electricity: the real value comes not from the technology itself, but from what ordinary people can do once they have access to it.

Why it matters: OpenAI is trying to frame the next era of AI as a public-benefit infrastructure shift, not just a race for smarter models — but the real test will be whether “AI for everyone” becomes broad empowerment or another way for a few institutions to capture even more power.

I use AI at home because I'm a working mom. It saves me 10 hours a week, and I'm tired of the backlash.

Title: This Mom Uses AI to Win Back 10 Hours a Week

Key Takeaway: A working mom says using AI at home has reduced her mental load, helped her manage family logistics, and given her more time with her child despite growing public backlash.

More Insights:

• She uses AI to organize family calendars, childcare schedules, and weekly activities.

• AI helps create grocery lists and meal plans based on pantry inventory, dietary needs, and family preferences.

• She used AI to track her daughter’s developmental milestones and prepare better for pediatrician visits.

• The biggest benefit is saving time and reducing the invisible mental work of parenting.

• She argues parents should not be judged for using AI when it helps them care for their families.

Why it matters: AI at home is not just about convenience — for overwhelmed parents, it can act like an invisible assistant that turns scattered responsibilities into manageable systems and gives families back their most valuable resource: time together.

Other stuff

• ‘We Expect It to Leak, So We’re Just Announcing It’: OpenAI Files Confidentially for IPO

• OpenAI, Anthropic, and Nvidia ramped up H-1B filings before a judge blocked Trump's $100,000 fee

• Inside Apple’s Secret Meeting That Led It to Finally Take AI Seriously

• SpaceX, Anthropic, OpenAI Can Rewrite History for Megacap IPOs

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