# Zvi Mowshowitz's weekly AI roundup covers Anthropic's IPO filing and a Slack breach

> Original title: AI #192: Anthropic Is Going Public

- Source: Don't Worry About the Vase (Zvi Mowshowitz)
- Published: 2026-10-29T13:49:48.000Z
- Bad Influence: https://badinfluence.news/items/vpa2ls6xhjpcu1qauefafqiyc
- Original: https://thezvi.substack.com/p/ai-192-anthropic-is-going-public

## Summary

Zvi Mowshowitz's weekly newsletter reports that Anthropic filed its S-1 for an IPO, with share price and some figures still missing. It also reports that white-hat researchers at Cathedral reached Anthropic's Slack through third-party vulnerabilities, which Anthropic says was out of scope of its safe harbor policy and did not expose model weights. The post also covers Google's Gemini 4 Carbon and OpenAI's firing of three safety researchers, whose accounts the author says are contested.

## Why it matters

The newsletter gathers many AI developments, so its value lies in the commentary that connects the Anthropic S-1 filing, the Slack breach, and the firing of OpenAI safety researchers.