Anthropic has restored Claude Fable 5 worldwide after the U.S. Commerce Department lifted export controls that had briefly forced the model offline. The dispute centered on a jailbreak found by Amazon researchers, and Anthropic responded by adding a new classifier to block the technique while keeping Mythos 5 under tighter restrictions. #Anthropic #ClaudeFable5 #Mythos5 #Amazon #HowardLutnick
Keypoints
- Claude Fable 5 is back online worldwide on Claude.ai and related services.
- The U.S. Commerce Department lifted export controls after a two-week review.
- Amazon researchers found a jailbreak that exposed security flaws in Fable 5.
- Anthropic deployed a classifier that blocks the jailbreak technique in over 99% of attempts.
- Mythos 5 remains restricted to a limited group of U.S. critical infrastructure users.
Read More: https://thehackernews.com/2026/07/anthropic-restores-claude-fable-5-after.html