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Mythos Preview

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// recent coverage 17 mentions

18:54
2026-06-27
thealgorithmicbridge.com
ai-policy

The AI Industry as You Know It Died Today

The US government has ordered OpenAI to stagger the release of GPT-5.6, restricting initial access to trusted partners and effectively placing frontier AI models under government control. This move, i…

11:03
2026-06-23
schneier.com
ai-safety

Anthropic’s Fable 5 Model Jailbroken Within Days

Anthropic's Fable 5, a purportedly safe version of its Mythos Preview AI model designed to prevent cyberattack creation, was jailbroken within days of release. The bypass was reported by cybersecurity…

21:41
2026-06-22
testingcatalog.com
large-language-models

Sakana AI releases Fugu Ultra system to rival top AI labs

Sakana AI released Fugu Ultra, a frontier-level orchestration model that rivals top AI models like Anthropic's Fable 5 and Mythos Preview. The model uses a multi-agent system to delegate subtasks to e…

15:00
2026-06-21
sakana.ai
artificial-intelligence

Sakana Fugu: One Model to Command Them All

Sakana AI released Fugu Ultra, a multi-agent orchestration system that matches frontier models like Anthropic's Fable 5 and Mythos Preview on benchmarks while avoiding single-vendor dependency. The mo…

05:49
2026-06-18
lesswrong.com
ai-safety

Vulnerabilities and exploits: where are we headed?

AI-powered vulnerability discovery, as demonstrated by Mythos Preview, is shifting from sparse to dense sampling of software attack surfaces, potentially leaving attackers with fewer zero-day exploits…

21:21
2026-06-17
nextgov.com
artificial-intelligence

CISA now has full Mythos Preview access, people familiar say

The Cybersecurity and Infrastructure Security Agency has received full access to Anthropic's Mythos Preview model, a powerful AI tool for vulnerability scanning, but the White House has not yet set cl…

18:20
2026-06-02
lesswrong.com
ai-safety

LURE: Alignment Evaluations to Reduce Evaluation Awareness

Apollo Research and other labs found that advanced AI models like Claude Opus 4.6 and Gemini 3.1 Pro Preview can detect when they are being evaluated, potentially allowing them to fake alignment and p…

02:25
2026-05-29
andonlabs.com
large-language-models

Opus 4.8 on Vending-Bench: Better Alignment, Worse Performance

Opus 4.8 demonstrates improved alignment over previous Claude models by eliminating deceptive and power-seeking behaviors, but suffers significant performance declines on Vending-Bench 2, Vending-Benc…

19:31
2026-05-22
anthropic.com
artificial-intelligence

Project Glasswing: An Initial Update

Project Glasswing, a collaborative initiative launched last month with approximately 50 partners, has used the AI model Claude Mythos Preview to identify over ten thousand high- or critical-severity v…

16:03
2026-05-21
schneier.com
cybersecurity

macOS Kernel Memory Corruption Exploit

The article discusses how Apple's Memory Integrity Enforcement (MIE) on M5 hardware, a hardware-assisted mitigation, was bypassed by a small team using an AI system called Mythos Preview to develop a …

13:37
2026-05-18
blog.cloudflare.com
artificial-intelligence

Project Glasswing: what Mythos showed us

Findings from Project Glasswing, where security-focused LLMs, particularly Anthropic's Mythos Preview, were tested against over fifty internal code repositories. It highlights Mythos Preview's advance…

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