#claude-mythos

Watch the Watchers

Cryptographic provenance for the telemetry your security decisions depend on.

Sakana Fugu vs Claude Fable 5: The Real AI Race Is Moving From Bigger Models To Smarter…

The next AI battleground may not be “which single model is smartest.”

One Model, Two Faces: How Anthropic Split Fable From Mythos

The same weights power both. What separates them is a wall — and the wall is the interesting engineering.

10,000 Bugs. 271 Firefox Fixes. One AI Model.

What Claude Mythos can actually do — and why “too capable” turned into a problem nobody had planned for.

When a feature fires, what do you actually know?

Reading the white-box interpretability claims in the Claude Mythos Preview system card

Did Fable Rebuild Skyrim?

A couple of weeks ago, before Fable got pulled off, I saw a post claiming that “Fable built Skyrim” from scratch with a simple prompt. Like…

When governments start pulling AI models mid-flight

AI Intelligence Briefing | Week of June 22, 2026

Claude Mythos 5: The AI That Changed the Conversation

An AI model so capable at finding software flaws that Anthropic decided the world wasn’t ready for it yet. Meet Claude Mythos Preview.

The 72-Hour Apocalypse: How a Single Prompt Shut Down the World’s Smartest AI

For exactly three days in June 2026, humanity had access to the most capable cognitive engine ever constructed. It could do the work of an…

Project Glasswing: How Anthropic Is Using Frontier AI to Secure the World’s Software

Introduction

Anthropic Built Their Most Powerful AI and Then Said “Actually, You Can’t Have This”

We are so conditioned to watch AI companies release things first and explain themselves later. A model drops, the benchmarks come out, the…

Anthropic Built an AI So Powerful He Chose Not to Release It

The Story of Fable 5 and Mythos 5

Fable 5 Becomes the First Frontier LLM Disabled by Export Controls

An ironic twist? Anthropic’s own fear-mongering may have helped trigger the crackdown on their smartest model…

🤯 The 72-Hour Reign: What Went Wrong With Claude Fable 5 and Mythos 5

Is it too hyped?

Claude Mythos 5: Are We Entering the Next Phase of AI Evolution?

Recently, I spent some time exploring the discussions around Claude Mythos 5, and it genuinely made me think about how quickly the AI…

Claude Mythos and Project Glasswing: The AI Security Alert

The emergence of Claude Mythos and Project Glasswing has sent a shockwave through the global technology sector, forcing researchers and…

The Saturday Mythos went away

I was trying to peel a daikon and couldn’t remember which direction to slice it for furofuki. This is the kind of thing I ask the model —…

Claude Fable 5 and Mythos 5 Were Released, Then Banned Within 3 Days. What’s Going On?

WHAT’S THE STORY?

20 Insane Claude Fable 5 Use Cases That Will Change How You Work Forever

Anthropic just released its most powerful AI to the public — and the world has no idea what’s about to hit them

The US Government Just Killed Two of Anthropic’s AI Models Overnight

On Frid‌ay‌ ev​ening‍, the US Commerce Department invoked a Cold War-⁠er⁠a e‌xport control do‍ctrin⁠e t​o force Anthropic‌ t‍o t‍ake Claude…

Claude Fable 5 Went Dark: What Developers Need to Know

How a government directive broke AI architectures overnight and the hard lessons we learned.

Anthropic Disables Claude Fable 5 and Mythos 5 After US Government Order

A US export order pulled Anthropic’s two strongest models offline overnight. I’m one of the people it was written to lock out, and the…

Dépendance fournisseur IA : la leçon du cas Anthropic

Trois jours ont suffi pour transformer un lancement technologique majeur en interruption mondiale. La suspension de Fable 5 et Mythos 5…

Before You Get Excited About Anthropic’s Claude Fable 5, Read This

Claude Fable 5 refused to help a developer last week because his prompt contained the phrase “two arms: commercial and residential.”

An Open Invitation to Anthropic: Fable 5 Came 10th on RealVuln. Help Us Put Mythos 5 on the Board.

We put Claude Fable 5 — the public version of “the world’s most dangerous AI” — on an open security benchmark. It landed mid-pack. But the…

Primo Victoria e a Nova Batalha que Nunca Termina

Originally published at https://www.linkedin.com.

Fable 5 Beat Pokémon, Built a Factorio Factory, and Plays Slay the Spire at 3x Opus Speed

Anthropic's Fable 5 launch is easier to grasp from the demo videos than from the benchmark table, so start there. Claude Fable 5 is a…

Claude Fable 5: What It Is, Why It Matters, and Why Everyone in AI Is Talking About It

Anthropic’s latest frontier model is Claude Fable 5, and it has a simple goal: to handle harder tasks, longer workflows, and more difficult…

Claude Mythos: Unveiling the Power of Loop-Driven, Agentic AI and the New Paradigms

The landscape of software engineering is undergoing an unprecedented transformation, driven by revolutionary advancements in artificial…

Anthropic Priced the Danger: What Claude Fable 5 Really Tells Us About AI Safety

On Tuesday, Anthropic released its most powerful model to date, days after warning the world that AI was getting too dangerous to control.

One Model, Two Products: Fable 5 and Mythos From Anthropic

Anthropic shipped Fable 5 and Mythos 5 today. They’re the same model. Who gets which version depends entirely on who you are. That’s a…

Claude Fable 5 Just Dropped: The Benchmarks Nobody Believes Yet

Claude Fable 5 is Mythos-class power for everyone. Benchmarks, $10/$50 pricing, safeguards, and the June 22 deadline nobody mentions.

Why The New Claude Fable 5 Does Not Fit Your Stack’s API Budget

First Thoughts and Should You Engineer Your Routing?

Anthropic Just Released Claude Fable 5 (The Mythos Model Everyone Can Use)

Claude Fable 5 is here, and most people don't realize what Anthropic just opened up. The story is not about performance or benchmarks but

Claude Fable 5: Anthropic’s Most Powerful Public AI Model — What Software Engineers & Cybersecurity…

The Mythos-class model is finally here for everyone. Here’s what it means for your work.

Claude Fable 5 Has Landed: A Builder’s Field Guide to Anthropic’s First Public Mythos-Class Model

On June 9, 2026, Anthropic made its most capable model generally available for the first time — but with an unusual safety mechanism bolted…

Every CVE Unlocks Another One

Every fix is also a lead. How I found two pyLoad CVEs by reading the patches for ten others

Claude Mythos s’ouvre à l’Europe et accélère la chasse aux bugs

Claude Mythos 5 Leak: The AI Anthropic Says Is Too Powerful to Release 🚨

The leaked model that reportedly found decades-old vulnerabilities, alarmed cybersecurity experts, and could change the AI race forever.

Is Claude Mythos Killing Cybersecurity Careers?

Interested in becoming a cybersecurity professional?

Cybersécurité : les 13 actualités majeures du 7 juin 2026

Anthropic Just Expanded Project Glasswing — and the Subtext Is a Warning

The headline is that Anthropic is giving ~150 more organizations access to its most powerful security model. The real story is why it’s…

Microsoft Just Beat Anthropic’s Most Hyped Mythos — With 100 Smaller AI Agents 🤯

While everyone was chasing bigger AI models, Microsoft quietly proved that architecture matters more than scale.

What the Mythos Coverage Got Wrong — In Both Directions

The AI cyber story is simultaneously overstated and understated. The benchmark everyone cited has a 30% false positive rate and zero active…

3 Main Reasons Global Banks Are Terrified of Anthropic Mythos AI

Finance May Never Be the Same Again

Claude Mythos Just Hit 10K+ Vulnerabilities In Its First 30 Days

Claude Mythos will become one of the greatest AI moments in the coming months once it’s available to the public.

The Era of Vibe Coders and Claude Mythos: How AI Is Rewriting the Rules of Software — and Security

The same revolution that put app-building in everyone’s hands has now spawned a model so dangerous that Anthropic won’t release it to the…

The Agentic Era Is Here: AI Intelligence Briefing, Week of May 24, 2026

Google declared the agentic era official at I/O this week. Anthropic is closing in on a valuation that would make it the most valuable…

Claude Mythos and the 10,000+ Flaw Wake‑Up Call

Mixture of Experts (MoE): Why Frontier Models Are Now Built This Way

You’ve probably noticed something: Grok 5 just hit 6 trillion parameters using MoE, Claude Mythos (~10 trillion) is coming, Mistral Large 3…