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Microsoft Won't Eat This

Microsoft Won't Eat This

Jun 11, 2026

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4 min read

Microsoft won't eat this

ISSUE #017

JUNE 11, 2026

// YOUR AI EDGE

MICROSOFT IS SELLING AN AI MODEL ITS OWN EMPLOYEES AREN’T ALLOWED TO USE

Anthropic shipped Claude Fable 5 this week. Microsoft rushed it out to paying customers and quietly blocked it for its own staff. The reason is a single setting most people never check.

// TODAY'S SIGNAL

THE CHEF SENT BACK HIS OWN COOKING

Anthropic released Claude Fable 5 on Tuesday. It’s the first model in their new Mythos class, the same family Anthropic said a few weeks ago was so good at hacking it was too dangerous to release. They bolted on safeguards and shipped it anyway.

Microsoft moved fast. Within hours, Fable 5 was live for GitHub Copilot and Foundry customers. The people paying Microsoft for AI got the newest, sharpest model the same day it dropped.

Microsoft’s own employees did not.

The Verge reported that Fable 5 is missing from the internal model picker Microsoft staff use for their version of Copilot. Every other Claude model is still there. Just not the new one. Microsoft’s legal team is reviewing it and hasn’t cleared it for internal use.

Sit with that. Microsoft will happily sell you a tool it won’t let its own engineers run on company laptops.

The reason isn’t that Fable 5 is bad. It’s a setting called data retention, and once you understand it, you’ll start checking it on every AI tool you touch.

Here’s the mechanics.

Older Claude models at Microsoft run under something called Zero Data Retention, or ZDR. You send a prompt, the model answers, and nothing gets stored. The conversation evaporates. That’s why legal was fine with it.

Fable 5 breaks that. To run Anthropic’s new safety classifiers, the ones that keep the model from helping someone build malware, Anthropic has to keep your prompts and the model’s answers. They hold that data for 30 days by default. If something you typed trips a policy flag, they can hold it for up to two years.

So if a Microsoft employee pasted confidential customer data or unreleased product plans into Fable 5, that text would sit on Anthropic’s servers for a month. Maybe longer. For a company that lives and dies by trade secrets, that’s a hard no.

Microsoft declined to comment, which is corporate for “yeah, that’s exactly what’s happening.”asked for seconds.

// THE REAL STORY

Data retention is the line between a tool that forgets you and a tool that keeps receipts. Before you paste anything sensitive into an AI, find the retention setting. Most tools bury it under “data controls” or “privacy.” Two questions answer everything: does this tool train on my inputs, and how long does it store them? If you can’t find the answer in 60 seconds, treat it like a stranger reading over your shoulder and paste accordingly. ChatGPT, Claude, and Gemini all have business tiers with zero-retention or no-training guarantees. The free tiers usually don’t. Knowing which one you’re on is a real professional skill now, and almost nobody has it. Microsoft’s lawyers ran this exact calculation in a day. The number of new grads who’d think to run it is close to zero, and that gap is the whole point of today’s issue.

// SHORTCUT

Copy, paste, go:

          "Read the privacy policy at [URL]. Answer three things in plain English, one sentence each: (1) Does this tool train its AI on what I type? (2) How long does it store my conversations? (3) Can I turn either of those off, and where? If the policy doesn't say, tell me it doesn't say instead of guessing."
        

// TOOLBOX

DUCK.AI

Duck.ai is the AI chat for people who got spooked by everything above. It’s DuckDuckGo’s free chat tool that lets you talk to Claude, GPT, and other models without any of them keeping your conversations or training on them. DuckDuckGo strips your identity before the message reaches the model, then deletes the whole exchange. It’s the burner phone of AI chat: useful when you want an answer, not a relationship.

The honest caveat: it’s built for quick questions, not long projects. There’s no memory between sessions, which is the entire selling point, so don’t expect it to remember your last chat. That’s a feature, not a bug.

No account, no signup, about 30 seconds to your first answer.

→ duck.ai

🌟

BEYOND THE OFFICE

real people using AI in ways nobody expected.

A Blind Artist Is Running a Marathon With Strangers in His Ear

Clarke Reynolds is a 45-year-old blind artist from Portsmouth who goes by “Mr Dot.” He has Retinitis Pigmentosa and describes his vision as looking underwater, seeing shadows and shapes. This spring he set out to run the Brighton Marathon, and the way he’s doing it is the part worth stealing.

He runs wearing Rayban Meta AI glasses linked to an app called Be My Eyes. He gives a voice command, and a volunteer somewhere in the world gets connected and sees the live view through his glasses. They warn him about bins and parked cars. In training he’s had more than a hundred of them: a woman in Virginia, a Scottish woman on holiday in Thailand, a retired naval officer in Canada.

He’d run the London Marathon once before with an in-person guide and said “never again,” because their stride patterns never matched his. The remote version fixed that. “I’ve got my own pace now,” he said. “There is no strain.” He also uses the same glasses to walk through art galleries and have the paintings described to him in the voice of Dame Judi Dench.

“I’m not amazing, I’m not a superhero. I’m just like you. I found a workaround so that I could do a marathon, and it’s just a new way of living my life.” That’s Clarke, in his own words.

// YOUR EDGE

01 Learn this: Find the data retention or “data controls” setting in every AI tool you use this week. Know whether each one trains on your inputs and how long it stores them. This is the privacy literacy that separates a careful professional from a liability.

02 Watch this: Whether Anthropic offers enterprise customers a zero-retention version of Fable 5. If Microsoft’s legal team caved this fast, every big company’s will too, and that pressure usually produces a fix within weeks.

03 Say this: “Before we paste anything in, do we know what its data retention policy is? Microsoft just blocked their own staff from a model over exactly that.” You’ll sound like the most careful person in the room, because you will be.

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