Anthropic just released Claude Fable 5, calling it the most powerful AI model it has ever made widely available and praising its skills in biology, among others. But the model won't answer basic biology questions - the kind you'd expect a high schooler to handle. Instead, it hands off the query to the former flagship model, Claude Opus 4.8.

It isn't because Fable doesn't know the answers. It's because Anthropic won't let it, by design.

Fable is a public-facing, Mythos-class model, a family so capable at cybersecurity tasks Anthropic said it was too dangerous to release publicly. But while Anthropic has spent much of the extended Mythos rol …

Read the full story at The Verge.

OpenAI has confidentially filed a draft S-1 with the SEC, opening the door to an IPO as Anthropic and other AI firms eye public markets.

Anthropic released Claude Fable, its first Mythos-class AI model, yesterday and it's already causing concerns inside Microsoft. Sources tell me that Microsoft is limiting the use of Claude Fable 5 for employees because of Anthropic's new data retention requirements.

While Microsoft quickly rolled out Claude Fable 5 to its GitHub Copilot and Foundry customers, I'm told the model isn't available in the model picker that Microsoft employees use for internal versions of GitHub Copilot. All other Claude models are still available internally at Microsoft, because they operate under Zero Data Retention (ZDR) rules.

I understand that Microsoft ha …

Read the full story at The Verge.

Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.

Anthropic annonce Claude Fable 5, une version sécurisée de Claude Mythos, son IA jugée trop dangereuse pour être mis entre les mains du public. La firme affirme avoir trouvé le moyen de le rendre accessible sans en réduire les capacités.

Instead of spending a year raising a formal venture fund, the Sabertooth VC founder used a captive network of LPs to invest in startups like Anthropic, Anduril, and SpaceX.

Anthropic's Claude Fable 5 is going to be a big hit with the web's vibe coders.

If those same AI workloads can be handled by cheaper models without affecting quality, it would mean a massive shift in the economics of AI.

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 cybersecurity and biology.

Numa semana histórica para o setor da inteligência artificial, a OpenAI submeteu o seu prospeto confidencial à SEC dias depois da Anthropic ter feito o mesmo. A SpaceX prepara-se para começar a negociar na bolsa ainda esta semana. E a Perplexity, imperturbável, mantém o seu plano para 2028.

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Em apenas três anos, o ChatGPT ultrapassou marcos que levaram décadas a construir ao TikTok, Instagram e YouTube. Os dados são da Sensor Tower e chegam numa semana em que tanto a OpenAI como a Anthropic preparam as suas entradas em bolsa.

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Espera-se que com esta oferta pública inicial, que deverá acontecer ainda este ano, a avaliação da Anthropic ultrapasse a marca de um bilião de dólares. O pedido surge numa altura em que a rival OpenAI também se prepara para entrar em bolsa.

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