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Storia in 16 fonti

It blocked us at 'hello!' Anthropic Fable 5 refusing innocuous prompts

Hyper-vigilant safety classifiers turn Fable into cautionary tale

Raccontata da

securityweek.com

arstechnica.com

independent.co.uk

theguardian.com

interconnects.ai

businessinsider.com

siliconrepublic.com

cryptobriefing.com

fortune.com+4 altre

Confronto fonti

6 prospettive sulla stessa storia

AI · summaries

theregister.comStai leggendo1 g fa

It blocked us at 'hello!' Anthropic Fable 5 refusing innocuous prompts

Hyper-vigilant safety classifiers turn Fable into cautionary tale

Timeline cronologica

martedì 9 giugno 2026·techcrunch.com
Anthropic releases Claude Fable, a version of Mythos, days after warning AI is becoming too dangerous
Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in high-risk areas like…
martedì 9 giugno 2026·securityweek.com
Anthropic Launches Claude Fable 5: Mythos-Class AI With Cybersecurity Guardrails
Anthropic launches Claude Fable 5, a Mythos-class AI model engineered with new safeguards that specifically restrict its use in cybersecurity.

understandingai.org

8 h fa

Anthropic’s Fable is the most locked-down public model we’ve ever seen

How Anthropic decides which questions are too dangerous for Claude to answer.

Leggi questa versione → originale

cryptobriefing.com8 h fa

Anthropic faces backlash over stricter safeguards on Claude model

Anthropic rolled back Fable 5's hidden safeguards after 24h: model silently downgraded sensitive-topic responses without disclosure. For tech leaders: responsible AI credibility needs transparent guardrails, not covert restrictions—trade-offs must be explicit.

Leggi questa versione → originale

arstechnica.com2 g fa

Anthropic says these topics are too dangerous to let its Fable 5 model talk about

New frontier model refuses cybersecurity, biology, and chemistry queries.

Leggi questa versione → originale

theverge.com20 h fa

Anthropic backpedals on Fable safety measure

Anthropic said users ‘should have visibility into the safeguards we have in place, and why.’

Leggi questa versione → originale

thehindu.com2 g fa

Anthropic opens Fable 5, restricted version of Claude Mythos 5, to public

Anthropic, maker of the Claude artificial intelligence (AI) models, made the most powerful version of its technology available to the general public

Leggi questa versione → originale

martedì 9 giugno 2026·

benzinga.com

Anthropic Rolls Out Fable 5, Mythos 5—One Comes With Limits

Anthropic launched Claude Fable 5, its most capable consumer-facing AI model to date, but with a few guardrails.

martedì 9 giugno 2026·

arstechnica.com

Anthropic says these topics are too dangerous to let its Fable 5 model talk about

New frontier model refuses cybersecurity, biology, and chemistry queries.

martedì 9 giugno 2026·

independent.co.uk

Anthropic releases ‘too dangerous’ AI Model with safeguards in place

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.Jump to contentThank you for registeringPlease refresh the page or…

mercoledì 10 giugno 2026·

theguardian.com

Anthropic releases ‘safe’ version of Claude Mythos AI model to public

AI company restricted access to Fable 5, its most powerful Mythos model, for months over cybersecurity concerns

mercoledì 10 giugno 2026·

interconnects.ai

Claude Fable 5 and new safety fables

One step further into the power politics of frontier AI systems.

mercoledì 10 giugno 2026·

thehindu.com

Anthropic opens Fable 5, restricted version of Claude Mythos 5, to public

Anthropic, maker of the Claude artificial intelligence (AI) models, made the most powerful version of its technology available to the general public

mercoledì 10 giugno 2026·

businessinsider.com

Anthropic's 'safe' Mythos-class model won't answer questions about cancer

The broad safeguards built into Anthropic's Claude Fable 5, a Mythos-class AI model, blocks some mundane requests on cybersecurity and biology.

mercoledì 10 giugno 2026·

siliconrepublic.com

Anthropic rolls out ‘Mythos-like’ AI model Claude Fable 5

Anthropic has unveiled Claude Fable 5, a model similar to Claude Mythos but with major cyber barriers blocking risky prompts and replies.

mercoledì 10 giugno 2026·

cryptobriefing.com

Cybersecurity researchers criticize Anthropic's Fable for strict guardrails that block defensive work

Anthropic's Claude Fable 5 faces backlash from cybersecurity researchers who say its safety classifiers block legitimate vulnerability research and

mercoledì 10 giugno 2026·

fortune.com

Anthropic accused of 'secret sabotage' as Claude Fable 5 silently limits capabilities for AI researchers and developers | Fortune

A paragraph buried in Fable 5's 319-page system card revealed the model would silently downgrade its responses for certain AI development work — without telling users.

mercoledì 10 giugno 2026·

fortune.com

Anthropic accused of ‘secret sabotage’ as Claude Fable 5 silently limits capabilities for AI researchers and developers | Fortune

A paragraph buried in Fable 5’s 319-page system card revealed the model would silently downgrade its responses for certain AI development work—without telling users.

mercoledì 10 giugno 2026·

cryptobriefing.com

Anthropic's Claude Fable 5 won't answer basic biology questions, and that's by design

Anthropic's Claude Fable 5 routes basic biology and cybersecurity questions to an older model by design, raising concerns for crypto security researchers.

mercoledì 10 giugno 2026·

theregister.com

It blocked us at 'hello!' Anthropic Fable 5 refusing innocuous prompts

Hyper-vigilant safety classifiers turn Fable into cautionary tale

giovedì 11 giugno 2026·

businessinsider.com

Anthropic: 'We made the wrong tradeoff' in new model guardrails

"We're changing Fable 5's safeguards for frontier LLM development to make them visible," an Anthropic spokesperson said.

giovedì 11 giugno 2026·

heise.de

Fable 5 blockiert auch sicheren Code

Schon das Stichwort „Security Audit“ reicht: Forscher kritisieren Anthropics Fable 5, weil dessen Cybersecurity-Filter auch harmlose Anfragen ausbremsen.

giovedì 11 giugno 2026·

siliconrepublic.com

Anthropic to reassess Claude Fable 5 AI development restrictions after backlash

Anthropic has to take another look at the AI restrictions for Claude Fable 5, amid significant public backlash over secretive practices.

giovedì 11 giugno 2026·

theverge.com

Anthropic backpedals on Fable safety measure

Anthropic said users ‘should have visibility into the safeguards we have in place, and why.’

giovedì 11 giugno 2026·

decrypt.co

Anthropic Apologizes for Claude Fable 5 Secret Censorship—But the Fix Has a Catch - Decrypt

One day after the AI community erupted over invisible performance sabotage on Claude Fable 5, Anthropic has reversed course.