Anthropic Pulls Claude Fable and Mythos AI Models After Feds Claim Jailbreak


Anthropic pulled access to its newly released AI models Mythos 5 and Fable 5 over the weekend after the US government imposed sweeping restrictions on who could use them.

The AI lab said in a statement that the federal government told it Friday afternoon that it had become aware of a way of “jailbreaking” Fable 5, bypassing limits that Anthropic had implemented to reduce the risk the model could be misused. When Anthropic first announced Mythos, it released the software only to a select group of government agencies and technology professionals because of its ability to uncover cybersecurity vulnerabilities. 

The government imposed what are known as export controls on the products, which Anthropic said means it had to suspend access to the two models by any foreign national, whether inside or outside of the US. The only way it could do so is by shutting the models down entirely, the company said.

Anthropic said late Friday that it disagreed that the jailbreak it was shown warranted such sweeping action, and that such a standard could “essentially halt” new frontier AI models if applied broadly.

“As we have stated publicly, we believe the government should have the ability to block unsafe deployments, as part of a statutory process that is transparent, fair, clear, and grounded in technical facts,” Anthropic said. “This action does not adhere to those principles.”

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Representatives for Anthropic and the US Department of Commerce did not immediately respond to requests for comment.

Anthropic has reportedly sent staff to Washington to negotiate with the Trump administration to sort out the issue. The Wall Street Journal reported that Anthropic leaders spent several hours on calls Saturday with Secretary of Commerce Howard Lutnick and National Cyber Director Sean Cairncross.

This isn’t the AI developer’s first conflict with Washington over AI models. The Department of Defense declared Anthropic a “supply chain risk” earlier this year after the company insisted on restrictions against the use of its Claude AI models for fully autonomous weapons or mass domestic surveillance. The Pentagon wanted the ability to use the models for “all lawful purposes.” 





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Medically reviewed by Robert Burakoff, MD

Drinking herbal tea and winding down with a relaxing activity can help soothe your gut at night.Credit: Drazen Zigic / Getty Images
Drinking herbal tea and winding down with a relaxing activity can help soothe your gut at night.
Credit: Drazen Zigic / Getty Images
  • Small habits in the evening can influence your gut health.
  • Eating a Mediterranean-style dinner, drinking a cup of herbal tea, and taking an after-dinner walk are simple ways to support your gut health in the evening.
  • Stress management, a regular bedtime routine, and getting seven to nine hours of sleep each night help anchor your circadian rhythm, which may keep your gut bacteria balanced.

Gut health is something you can work at improving at all hours of the day. Here are seven simple habits you can do in the evening hours to support gut health.

1. Have a Mediterranean Dinner

Following the basics of the Mediterranean diet at dinner could support your gut health in the evening and beyond. This includes:

  • Fresh fruits and vegetables
  • Legumes
  • Whole grains
  • Poultry
  • Fish
  • Healthy fats, like olive oil

The foods you eat determine the makeup of your gut microbiome, or the system of microorganisms that live in your gastrointestinal tract. Whole foods and minimally processed foods contain nutrients, such as fiber, vitamins, and minerals, that support a balanced gut.

The Mediterranean diet is known for its health benefits, including reduced inflammation and improved overall health. Research also shows that the diet has a positive impact on the gut. People who followed a Mediterranean diet were found to have more microorganisms in their gut compared to people who ate a diet higher in sugar, fat, and salt.

2. Finish Eating 2-3 Hours Before Bed

Eating too close to bedtime could disrupt your sleep and impact gut health. A meal that isn't fully digested can cause unpleasant digestive symptoms, especially if you're prone to indigestion. While there are no rules about when to stop eating before bed, finishing your last full meal two to three hours before bedtime can give your body enough time to digest.

New, early research suggests that eating late at night may negatively affect the gut. The researchers found connections between stress, late-night eating, and bowel issues. Those who had both high stress and late-night eating patterns were 2.5 times more likely to also report bowel problems and have lower gut microbiome diversity.

If you need a snack after dinner, opt for foods that have protein, fiber, or healthy fats, including:

  • Fruits, like berries or kiwi
  • Low-fat yogurt
  • Nuts
  • While grains
  • Fermented foods like kimchi, kefir, or kombucha

3. Take a Walk After Dinner

An evening stroll can have benefits beyond getting in your daily steps. It could also help your body move food through the digestive system.

You don't have to walk for that long, either. In one four-week study, researchers found that a 10-15-minute walk after a meal was more effective than a prokinetic medication for easing bloating and discomfort in adults who regularly experience bloating.

If you can't walk around the neighborhood, even standing up and moving your body around the room could help.

4. Have a Cup of Herbal Tea

Sipping a caffeine-free herbal tea in the evening can be a relaxing ritual. Certain teas, including ginger and peppermint tea, can also help with digestion and ease unpleasant symptoms such as gas and bloating.

Ginger is known for easing stomach discomfort. Drinking ginger tea can help with gas and bloating because ginger reduces constipation and the breakdown of undigested nutrients in the gut. You can buy dried ginger tea in a bag or make it from fresh ginger. It's generally considered safe to drink in moderate amounts daily.

Peppermint can help with cramping and bloating. The tea is made from peppermint leaves and is generally considered safe. One thing to note is that peppermint can also trigger indigestion, so if you're prone to heartburn, it might not be a good choice.

5. Pick a Wind-Down Practice

The brain and gut are connected. Stress affects gut health, and higher stress levels are linked to stomach issues such as nausea, constipation, and diarrhea. When your stress hormones are high, it can lead to increased gut inflammation and potentially an imbalance in gut bacteria.

Choosing a relaxing activity to practice in the evenings could help lower your stress, which can also benefit your gut. Try a mind-body or mental health practice, such as:

  • Meditation
  • Breathing exercises
  • Yoga
  • Journaling
  • Gratitude affirmations

Some evidence suggests that slow, deep breathing has positive impacts on the gut, such as improving symptoms in people with irritable bowel syndrome (IBS).

6. Keep Bedtime Consistent

Having a regular bedtime routine can help you get more consistent sleep, which may also positively affect your gut. Research suggests that changes to your sleep cycle can affect your gut microbiome. Keeping a regular sleep and wake time anchors the circadian rhythm. Even a few days of irregular sleep could impact your gut.

While researchers are still learning about the complex connection between the gut and sleep, it appears as though sleep disturbances can change the gut's makeup and function. Setting a regular bedtime and wake time and sticking to it as closely as possible could benefit your gut health.

7. Get Enough Sleep

Something as simple as regularly getting enough sleep could have a big impact on your gut health. Experts recommend that adults get between seven and nine hours of sleep each night. Sleeping less than seven hours could put you at risk for health issues.

Shorter sleep time can affect the gut microbiome, potentially causing an imbalance that could lead to inflammation and metabolic problems.

The relationship between sleep and your gut seems to work both ways. Just as poor sleep can negatively affect gut health, an unbalanced gut may contribute to sleep troubles. If you're not consistently getting the recommended amount of sleep and aren't able to improve your sleep with at-home habits, it might be worth asking a healthcare provider for help.



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