🔓Anthropic Accidentally Leaks 'Mythos' AI Details
Details of Anthropic's next flagship AI, Claude Mythos, surfaced this week after the company's CMS left launch materials in an unsecured data store, with the leaked blog calling it 'a step change' and Anthropic's most capable system to date.
- —A CMS configuration error left thousands of unpublished assets, including a draft blog post about the model, in a publicly accessible data cache
- —The draft placed Mythos in a new "Capybara" tier that would sit above its Opus class, both larger and more expensive to run
- —Anthropic flagged the model as "currently far ahead of any other AI model in cyber capabilities" and warned it could help hackers outpace defenders
- —Anthropic confirmed to Fortune that a "new general purpose model with meaningful advances in reasoning, coding, and cybersecurity" is being tested
Why it matters: A safety-focused AI lab 'accidentally' leaving its most powerful model's launch plans in a public data store has a similar vibe to OpenAI's Q*-era leaks, where conveniently timed rumors doubled as free hype.
💪Create Skills in ChatGPT with Codex
In this guide, you will learn how to get repeatable "skill"-style workflows to work with ChatGPT. The idea is to use Codex Desktop as a skills playground, create a reusable skill there, and then run it on demand.
- —Install the Codex desktop app, click 'add a new project', then create/select a folder to act as your skills playground
- —Start a thread and ask Codex to create the needed skill. Example: "Make me a skill to use the AARR framework to evaluate existing startups"
- —Type / and select your new skill to run it like any other repeatable workflow
Why it matters: Codex Desktop is quickly filling the gap left by ChatGPT's lack of repeatable skills, becoming a practical tool for power users.
⚔️ The Personal War Behind OpenAI and Anthropic
The WSJ just laid out the personal grudges, power struggles, and broken promises between Sam Altman and Dario Amodei that trace back to an SF group house in 2016, with the fallout shaping the rivalry between the two AI leaders.
- —Dario (2016-2020) and Daniela Amodei (2018-2020) worked at OpenAI prior to Anthropic, with early issues with co-founder Greg Brockman
- —Brockman reportedly once floated selling AGI to UN Security Council nuclear powers, a proposal Dario considered 'tantamount to treason'
- —The WSJ also reported that Altman accused the Amodeis of plotting against him to the board in a private meeting, then denied it when confronted
- —Amodei privately likened Altman/Musk suit to Hitler vs. Stalin, called Brockman's pro-Trump PAC donation 'evil', and compared OpenAI to Big Tobacco
Why it matters: The grudges are entertaining, but they're also steering the trajectory of two of the most important AI companies — with impacts that ripple through much more than just a personal rivalry.