# Anthropic restores AI models Fable, Mythos after the U.S. lifts export controls

_Thursday, July 2, 2026 at 1:04 AM EDT · AI · Latest · Tier 2 — Notable_

![Anthropic restores AI models Fable, Mythos after the U.S. lifts export controls — CoinDesk](https://cdn.sanity.io/images/s3y3vcno/production/e1c6b75a8b74bc87b66e15947b85122a0ef80c34-960x640.jpg?auto=format&w=960&h=540&crop=focalpoint&fit=clip&q=75&fm=jpg)

Anthropic is restoring access to its two most advanced AI models, Claude Fable 5 and Claude Mythos 5, after the U.S. government lifted export controls that forced a suspension last month, the company said. The controls were removed on June 30, according to CoinDesk. Fable 5 returned globally on July 1 across Anthropic's platforms. Mythos 5, which shares the same underlying model but carries fewer safety restrictions, is being restored to a set of U.S. organizations following government approval on June 26. The freeze began June 12 when the government applied export controls -- rules limiting which foreign nationals can access a technology -- to both models. Because the order took effect immediately and Anthropic could not verify users' nationality in real time, it suspended access for everyone rather than risk breaching the rule. The trigger was a cybersecurity finding after Amazon researchers reported a way to bypass Fable 5's safeguards, a technique known as a jailbreak, prompting the model to identify software vulnerabilities and produce code showing how one could be exploited. CoinDesk reported that a pre-IPO perpetual futures contract tied to Anthropic on Hyperliquid fell about 3.7% when access was suspended in June.

## Sources

- [CoinDesk](https://www.coindesk.com/tech/2026/07/01/anthropic-restores-ai-models-fable-mythos-after-the-u-s-lifts-export-controls)

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Retrieved: 2026-07-02T07:51:39.377Z
Publisher: Tech & Business (techandbusiness.org)