MRAJ

Software Engineer | Technopreneur | FX Trader 𖣘

[Teksart @TeksCreate]

Claude Fable 5 is back online — worldwide, as of yesterday.

On June 30, the U.S. Commerce Department lifted the export controls it had slapped on Fable 5 (and the tighter Mythos 5) on June 12. The trigger: Amazon researchers found a jailbreak prompt that got Fable 5 to flag software flaws and write proof-of-concept exploit code.

Here's what actually happened:

— The jailbreak worked on plenty of other models too, including Claude Opus 4.8, GPT-5.5, and Kimi K2.7. Anthropic called it routine defensive security work, not a hidden super-capability.

— The government saw it differently. Emergency export controls cut off both models to ANY foreign national — including Anthropic's own non-citizen staff. The company couldn't verify nationality in real time, so it shut both models down for everyone.

— To get Fable 5 back, Anthropic trained a new classifier that catches the exact jailbreak technique. Stops it 99%+ of attempts. Blocked requests drop to the weaker Opus 4.8 instead.

— Mythos 5 (fewer safety guardrails) stays on a shorter leash: ~100 critical-infrastructure companies and federal agencies only, for now.

The bigger picture that nobody's talking about enough:

Anthropic is now proposing a shared industry standard for ranking jailbreak severity — scored on capability gain, breadth, ease of weaponization, and discoverability. They've opened a HackerOne program. They're standing up a 24/7 jailbreak monitoring team.

This is the first time export controls have been imposed on an AI model and then lifted. The precedent matters — and it sets a playbook for every future frontier-model incident.

https://t.co/M8h7e5Sd9u

[MRAJ @MRAJf2ts]

@dazacode https://t.co/edr6OXCfcX

[MRAJ @MRAJf2ts]

@dazacode Everyone using Fable 5, now chairman is tired

[MRAJ @MRAJf2ts]

@MDALISHANALI2 https://t.co/edr6OXCfcX

[MRAJ @MRAJf2ts]

@aharoJ I have multiple running sessions and few of them are down

[MRAJ @MRAJf2ts]

@andrewmackenzie You're not alone

[MRAJ @MRAJf2ts]

@kingneduuu @GollyExpress

[MRAJ @MRAJf2ts]

@kingneduuu Just image, charlie it’s just some days to 2026. And you expect me to use this thing

[MRAJ @MRAJf2ts]

@kingneduuu And this is not even the only thing I ordered. You people still get the balls to come and make advertisement here without sorting out old outstanding orders

[MRAJ @MRAJf2ts]

@atsunicklaz @soulpee Bro for sure, the items are not on route (it should have been here long time of it was). They’re just sitting somewhere only God knows

[MRAJ @MRAJf2ts]

@hibirren @soulpee This is true, same issue

[MRAJ @MRAJf2ts]

@soulpee You guys called in October and said it’ll be delayed for a week, now it’s 2 months delay? bro really? So you think that’s it, we should be okay in our homes?

[MRAJ @MRAJf2ts]

@kingneduuu @GollyExpress @soulpee And they’re quiet about this, interesting. Bad management paaa

[MRAJ @MRAJf2ts]

@soulpee No email or nothing to address that? Chalie

[MRAJ @MRAJf2ts]

@soulpee What about orders from October that haven’t been received?

[MRAJ @MRAJf2ts]

@manixh Try https://t.co/y6i6y3mAQS

[MRAJ @MRAJf2ts]

@0x7fff5fbff7c8 @mzer_terdoo Can you share the full steps to do this?

[MRAJ @MRAJf2ts]

@theo axios

[MRAJ @MRAJf2ts]

@rasmalai Solidity

[MRAJ @MRAJf2ts]

@kingneduuu @GollyExpress @soulpee Please when did you receive your package?