Why Was Fable 5 Banned? The Full Story Behind the Claude AI Shutdown
The US banned Anthropic's Fable 5 AI model on June 12, 2026, citing a jailbreak and national security - and cut off India's users overnight
Why Was Fable 5 Banned? The Full Story Behind the Claude AI Shutdown Why Fable 5 Was Banned - Quick Facts: What: The US government issued an export-control directive ordering Anthropic to suspend its Fable 5 and Mythos 5 AI models for all foreign nationals When: June 12, 2026 at 5:21 PM ET - Fable 5 had been live for just three days Why: The US government claimed a "jailbreak" technique was found that could expose cybersecurity vulnerabilities. Anthropic disputes the severity Who's affected: All non-US users worldwide - including India, which had just been named Anthropic's second-largest market India specifically: A TCS-Anthropic partnership was announced just days before the ban. Indian enterprise users lost access with no warning What still works: Claude Opus 4.8, Sonnet, and Haiku are unaffected. Only Fable 5 and Mythos 5 were taken down Current status: Both models remain offline globally. Anthropic says it is "working to restore access as soon as possible" Three days. That's how long Fable 5 was available before the US gove…
About the author
Gnaneshwar Gaddam is an Electrical Engineer based in Hyderabad with 15+ years of hands-on experience in PC hardware, software troubleshooting, cybersecurity awareness and tech advisory. He founded Digitnaut to cut through tech hype and deliver pract…