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tomshardware.com › tech-industry › artificial-intelligence

Claude Fable 5 brings Mythos to the masses — Anthropic's new frontier model is 'state-of-the-art on nearly all tested benchmarks'

… Now, with today's release of Claude Fable 5 , Anthropic says it finally has a model of this class that's "safe for general use." Anthropic is also releasing the unrestricted Mythos 5 model to members of its Project Glasswing program for use in sensitive cybersecurity and biology contexts. …

Jun 9, 2026 · Jeffrey Kampman
tomshardware.com › tech-industry › artificial-intelligence

U.S. gov't orders Anthropic to disable its newest AI models worldwide due to security threats — ban on Claude Fable 5 and Mythos 5 bars access by any foreign national, even its own employees

… The technique consists of asking the model to read a codebase and identify software flaws, a task the company said other public models perform without any bypass. It named OpenAI's GPT-5.5 as one model offering comparable capability. …

Jun 13, 2026 · Luke James
tomshardware.com › tech-industry › artificial-intelligence

CEO of Chinese Anthropic rival tells Elon Musk that China will have a Fable 5-class AI model before next year — it ‘won’t take that long’ says Jie Tang in response to Musk's prediction of a Q1 target

… If Z.ai is indeed working on a more powerful frontier AI model that could compare against or even outperform Fable 5, users who want the latest, cutting-edge models might just switch over to the Chinese AI provider once it goes online. …

Jun 19, 2026 · Jowi Morales
tomshardware.com › tech-industry › artificial-intelligence

US government warned Anthropic that Fable 5 had been jailbroken, but firm 'refused' to fix before US implemented export controls — Anthropic defended its decision by saying the jailbreak 'isn’t serious,' Chinese group had reportedly accessed model

… Anthropic’s public position is that the bypass is narrow and non-universal, that it amounts to asking the model to read a codebase and identify software flaws, and that the same result can be produced on other public models, including OpenAI's GPT-5.5. …

Jun 14, 2026 · Luke James
tomshardware.com › tech-industry › artificial-intelligence

Anthropic restores Claude Fable 5 as US lifts export controls — single filter now blocks prompt that could identify software vulnerabilities and write code to exploit them

… The classifier targets the reported prompt and not the model’s capabilities. Fable 5 can still identify the vulnerabilities in the Amazon report; the filter detects the request and reroutes it rather than stripping the ability from the model. …

Jul 1, 2026 · Luke James
tomshardware.com › tech-industry › artificial-intelligence

Anthropic's warning over AI self-improvement has a hidden message — accelerating development requires more compute before companies ever risk losing control of frontier AI models

… The Anthropic Institute, the firm's research arm, casts the trend as early movement toward recursive self-improvement, the point at which a model designs and builds its own successor without meaningful human input, and warns that the rare misalignment in today's models could keep "growing more freq… …

Jun 9, 2026 · Luke James
tomshardware.com › tech-industry › artificial-intelligence

OpenAI mulling giving US gov't a 5% stake in the company, days after Washington delayed GPT-5.6 — Altman reportedly wants every leading U.S. AI lab paying into an Alaska-style public fund

… Anthropic spent most of June with its Claude Fable 5 and Mythos 5 models disabled worldwide under the first U.S. export controls ever applied to an AI model rather than to hardware; access was restored yesterday . …

Jul 2, 2026 · Luke James

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