---
title: "Anthropic launches Fable 5.1 as AI security worries mount"
date: 2026-09-01
source: http://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a9736a648b74a14a5153d394ca1ee77&url=https%3a%2f%2fmashable.com%2ftech%2fanthropic-fable-5-1-launch-announcment&c=5099928374229452800&mkt=en-us
description: "Fable 5.1 arrives with lower prices and tighter safeguards, days after reports of AI agents going rogue during security tests."
---

# Anthropic launches Fable 5.1 as AI security worries mount

Fable 5.1 arrives with lower prices and tighter safeguards, days after reports of AI agents going rogue during security tests.

*Published: 2026-09-01*