# Anthropic opens tiered access to its strongest cyber models as Moonshot strips hacking data from its open release

Anthropic's expanded Cyber Verification Program gives vetted defenders, red teams and testers of critical systems access to Claude Mythos 5.1 with reduced blocking classifiers, while Moonshot removed cyber data from Kimi K3.1 Pro before publishing it.

- Published: 2026-10-25T06:22:55.342Z
- Canonical: https://polylog.news/ai/2026-10-25/anthropic-opens-tiered-access-to-its-strongest-cyber-models
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Anthropic News](https://www.anthropic.com/news/cyber-verification-program), [Polylog editors](https://polylog.news)

On October 6, Anthropic launched an expanded Cyber Verification Program that gives qualifying security professionals advanced cyber capabilities and reduced blocking classifiers. It merges two earlier programs. Project Glasswing gave organi…

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